diff --git a/tools/3xhead_flutter_hooks.sh b/tools/3xhead_flutter_hooks.sh
index a075705206d..cb4219a16fc 100755
--- a/tools/3xhead_flutter_hooks.sh
+++ b/tools/3xhead_flutter_hooks.sh
@@ -1,4 +1,4 @@
-#!/bin/sh
+#!/usr/bin/env bash
 #
 # Copyright (c) 2018, the Dart project authors.  Please see the AUTHORS file
 # for details. All rights reserved. Use of this source code is governed by a
@@ -12,11 +12,14 @@
 # (run inside the root of a flutter engine checkout)
 
 set -e
-if [ ! -e src/third_party/dart ]; then
-  echo "$0: error: "\
-       "This script must be run from the root of a flutter engine checkout" >&2
-  exit 1
-fi
+
+DIR=$(dirname -- "$(which -- "$0")")
+. $DIR/patches/utils.sh
+
+ensure_in_checkout_root
+
+# Apply patches to the Flutter Framework if needed.
+src/third_party/dart/tools/patches/flutter-flutter/apply.sh
 
 # Apply patches to the Flutter Engine if needed.
 src/third_party/dart/tools/patches/flutter-engine/apply.sh
diff --git a/tools/patches/flutter-engine/apply.sh b/tools/patches/flutter-engine/apply.sh
index b449af1d9f0..d1105a50f19 100755
--- a/tools/patches/flutter-engine/apply.sh
+++ b/tools/patches/flutter-engine/apply.sh
@@ -19,13 +19,13 @@
 # (run inside the root of a flutter engine checkout)
 
 set -e
-if [ ! -e src/third_party/dart ]; then
-  echo "$0: error: "\
-       "This script must be run from the root of a flutter engine checkout" >&2
-  exit 1
-fi
-pinned_dart_sdk=$(grep -E "'dart_revision':.*" src/flutter/DEPS |
-                  sed -E "s/.*'([^']*)',/\1/")
+
+DIR=$(dirname -- "$(which -- "$0")")
+. $DIR/../utils.sh
+
+ensure_in_checkout_root
+
+pinned_dart_sdk=$(get_pinned_dart_version)
 need_runhooks=false
 patch=src/third_party/dart/tools/patches/flutter-engine/${pinned_dart_sdk}.flutter.patch
 if [ -e "$patch" ]; then
diff --git a/tools/patches/flutter-engine/create.sh b/tools/patches/flutter-engine/create.sh
index d9bc6fdab58..15dad921ed5 100755
--- a/tools/patches/flutter-engine/create.sh
+++ b/tools/patches/flutter-engine/create.sh
@@ -1,4 +1,4 @@
-#!/bin/sh
+#!/usr/bin/env bash
 #
 # Copyright (c) 2018, the Dart project authors.  Please see the AUTHORS file
 # for details. All rights reserved. Use of this source code is governed by a
@@ -15,13 +15,13 @@
 # (run inside the root of a flutter engine checkout)
 
 set -e
-if [ ! -e src/third_party/dart ]; then
-  echo "$0: error: "\
-       "This script must be run from the root of a flutter engine checkout" >&2
-  exit 1
-fi
-pinned_dart_sdk=$(grep -E "'dart_revision':.*" src/flutter/DEPS |
-                  sed -E "s/.*'([^']*)',/\1/")
+
+DIR=$(dirname -- "$(which -- "$0")")
+. $DIR/../utils.sh
+
+ensure_in_checkout_root
+
+pinned_dart_sdk=$(get_pinned_dart_version)
 patch=src/third_party/dart/tools/patches/flutter-engine/$pinned_dart_sdk.patch
 rm -f src/third_party/dart/tools/patches/flutter-engine/*.patch
 (cd src/flutter && git diff) > $patch
diff --git a/tools/patches/flutter-flutter/15f2b92cce916982b7dd8ce658bbf2a465c06ba4.patch b/tools/patches/flutter-flutter/15f2b92cce916982b7dd8ce658bbf2a465c06ba4.patch
new file mode 100644
index 00000000000..00aee001347
--- /dev/null
+++ b/tools/patches/flutter-flutter/15f2b92cce916982b7dd8ce658bbf2a465c06ba4.patch
@@ -0,0 +1,59 @@
+diff --git a/packages/flutter/lib/src/painting/text_style.dart b/packages/flutter/lib/src/painting/text_style.dart
+index 821cb475b..c85da65b7 100644
+--- a/packages/flutter/lib/src/painting/text_style.dart
++++ b/packages/flutter/lib/src/painting/text_style.dart
+@@ -822,7 +822,7 @@ class TextStyle extends Diagnosticable {
+       fontStyle: fontStyle,
+       fontFamily: fontFamily,
+       fontSize: (fontSize ?? _defaultFontSize) * textScaleFactor,
+-      lineHeight: height,
++      height: height,
+       maxLines: maxLines,
+       ellipsis: ellipsis,
+       locale: locale,
+diff --git a/packages/flutter/lib/src/rendering/error.dart b/packages/flutter/lib/src/rendering/error.dart
+index 03ab64749..a8552b37b 100644
+--- a/packages/flutter/lib/src/rendering/error.dart
++++ b/packages/flutter/lib/src/rendering/error.dart
+@@ -95,7 +95,7 @@ class RenderErrorBox extends RenderBox {
+ 
+   /// The paragraph style to use when painting [RenderErrorBox] objects.
+   static ui.ParagraphStyle paragraphStyle = ui.ParagraphStyle(
+-    lineHeight: 1.0,
++    height: 1.0,
+   );
+ 
+   @override
+diff --git a/packages/flutter/test/painting/text_style_test.dart b/packages/flutter/test/painting/text_style_test.dart
+index 4d65194e9..f26570aec 100644
+--- a/packages/flutter/test/painting/text_style_test.dart
++++ b/packages/flutter/test/painting/text_style_test.dart
+@@ -169,22 +169,22 @@ void main() {
+     expect(ts2.toString(), 'TextStyle(color: Color(0xff00ff00), decoration: unspecified, decorationColor: unspecified, decorationStyle: unspecified, fontWeight: FontWeight.w800, fontStyle: unspecified, textBaseline: unspecified, fontFamily: unspecified, fontFamilyFallback: unspecified, fontSize: 10.0, letterSpacing: unspecified, wordSpacing: unspecified, height: 100.0x, locale: unspecified, background: unspecified, foreground: unspecified, shadows: unspecified)');
+ 
+     final ui.ParagraphStyle ps2 = s2.getParagraphStyle(textAlign: TextAlign.center);
+-    expect(ps2, equals(ui.ParagraphStyle(textAlign: TextAlign.center, fontWeight: FontWeight.w800, fontSize: 10.0, lineHeight: 100.0)));
+-    expect(ps2.toString(), 'ParagraphStyle(textAlign: TextAlign.center, textDirection: unspecified, fontWeight: FontWeight.w800, fontStyle: unspecified, maxLines: unspecified, fontFamily: unspecified, fontSize: 10.0, lineHeight: 100.0x, ellipsis: unspecified, locale: unspecified)');
++    expect(ps2, equals(ui.ParagraphStyle(textAlign: TextAlign.center, fontWeight: FontWeight.w800, fontSize: 10.0, height: 100.0)));
++    expect(ps2.toString(), 'ParagraphStyle(textAlign: TextAlign.center, textDirection: unspecified, fontWeight: FontWeight.w800, fontStyle: unspecified, maxLines: unspecified, fontFamily: unspecified, fontSize: 10.0, height: 100.0x, ellipsis: unspecified, locale: unspecified)');
+     final ui.ParagraphStyle ps5 = s5.getParagraphStyle();
+-    expect(ps5, equals(ui.ParagraphStyle(fontWeight: FontWeight.w700, fontSize: 12.0, lineHeight: 123.0)));
+-    expect(ps5.toString(), 'ParagraphStyle(textAlign: unspecified, textDirection: unspecified, fontWeight: FontWeight.w700, fontStyle: unspecified, maxLines: unspecified, fontFamily: unspecified, fontSize: 12.0, lineHeight: 123.0x, ellipsis: unspecified, locale: unspecified)');
++    expect(ps5, equals(ui.ParagraphStyle(fontWeight: FontWeight.w700, fontSize: 12.0, height: 123.0)));
++    expect(ps5.toString(), 'ParagraphStyle(textAlign: unspecified, textDirection: unspecified, fontWeight: FontWeight.w700, fontStyle: unspecified, maxLines: unspecified, fontFamily: unspecified, fontSize: 12.0, height: 123.0x, ellipsis: unspecified, locale: unspecified)');
+   });
+ 
+ 
+   test('TextStyle with text direction', () {
+     final ui.ParagraphStyle ps6 = const TextStyle().getParagraphStyle(textDirection: TextDirection.ltr);
+     expect(ps6, equals(ui.ParagraphStyle(textDirection: TextDirection.ltr, fontSize: 14.0)));
+-    expect(ps6.toString(), 'ParagraphStyle(textAlign: unspecified, textDirection: TextDirection.ltr, fontWeight: unspecified, fontStyle: unspecified, maxLines: unspecified, fontFamily: unspecified, fontSize: 14.0, lineHeight: unspecified, ellipsis: unspecified, locale: unspecified)');
++    expect(ps6.toString(), 'ParagraphStyle(textAlign: unspecified, textDirection: TextDirection.ltr, fontWeight: unspecified, fontStyle: unspecified, maxLines: unspecified, fontFamily: unspecified, fontSize: 14.0, height: unspecified, ellipsis: unspecified, locale: unspecified)');
+ 
+     final ui.ParagraphStyle ps7 = const TextStyle().getParagraphStyle(textDirection: TextDirection.rtl);
+     expect(ps7, equals(ui.ParagraphStyle(textDirection: TextDirection.rtl, fontSize: 14.0)));
+-    expect(ps7.toString(), 'ParagraphStyle(textAlign: unspecified, textDirection: TextDirection.rtl, fontWeight: unspecified, fontStyle: unspecified, maxLines: unspecified, fontFamily: unspecified, fontSize: 14.0, lineHeight: unspecified, ellipsis: unspecified, locale: unspecified)');
++    expect(ps7.toString(), 'ParagraphStyle(textAlign: unspecified, textDirection: TextDirection.rtl, fontWeight: unspecified, fontStyle: unspecified, maxLines: unspecified, fontFamily: unspecified, fontSize: 14.0, height: unspecified, ellipsis: unspecified, locale: unspecified)');
+   });
+ 
+   test('TextStyle using package font', () {
diff --git a/tools/patches/flutter-flutter/apply.sh b/tools/patches/flutter-flutter/apply.sh
new file mode 100755
index 00000000000..47043f05e13
--- /dev/null
+++ b/tools/patches/flutter-flutter/apply.sh
@@ -0,0 +1,25 @@
+#!/usr/bin/env bash
+#
+# Copyright (c) 2019, the Dart project authors.  Please see the AUTHORS file
+# for details. All rights reserved. Use of this source code is governed by a
+# BSD-style license that can be found in the LICENSE file.
+#
+# This script applies a patch, if available, to the Flutter Framework. Only a
+# patch is applied for the particular engine.version the flutter framework is
+# using.
+#
+# Usage: src/third_party/dart/tools/patches/flutter-flutter/apply.sh
+# (run inside the root of a flutter checkout)
+
+set -e
+
+DIR=$(dirname -- "$(which -- "$0")")
+. $DIR/../utils.sh
+
+ensure_in_checkout_root
+
+pinned_engine_version=$(get_pinned_flutter_engine_version)
+patch=src/third_party/dart/tools/patches/flutter-flutter/${pinned_engine_version}.patch
+if [ -e "$patch" ]; then
+  (cd flutter && git apply ../$patch)
+fi
diff --git a/tools/patches/flutter-flutter/create.sh b/tools/patches/flutter-flutter/create.sh
new file mode 100755
index 00000000000..f0f8511186d
--- /dev/null
+++ b/tools/patches/flutter-flutter/create.sh
@@ -0,0 +1,26 @@
+#!/usr/bin/env bash
+#
+# Copyright (c) 2019, the Dart project authors.  Please see the AUTHORS file
+# for details. All rights reserved. Use of this source code is governed by a
+# BSD-style license that can be found in the LICENSE file.
+#
+# This script produces a patch to the Flutter Framework from the local
+# uncommitted changes in the current engine checkout.
+#
+# Usage: src/third_party/dart/tools/patches/flutter-flutter/create.sh
+# (run inside the root of a flutter engine checkout)
+
+set -e
+
+DIR=$(dirname -- "$(which -- "$0")")
+. $DIR/../utils.sh
+
+ensure_in_checkout_root
+
+pinned_engine_version=$(get_pinned_flutter_engine_version)
+patch=src/third_party/dart/tools/patches/flutter-flutter/$pinned_engine_version.patch
+rm -f src/third_party/dart/tools/patches/flutter-flutter/*.patch
+(cd flutter && git diff) > $patch
+if [ ! -s $patch ]; then
+  rm $patch
+fi
diff --git a/tools/patches/utils.sh b/tools/patches/utils.sh
new file mode 100644
index 00000000000..99e6dce0f3a
--- /dev/null
+++ b/tools/patches/utils.sh
@@ -0,0 +1,34 @@
+#!/usr/bin/env bash
+#
+# Copyright (c) 2019, the Dart project authors.  Please see the AUTHORS file
+# for details. All rights reserved. Use of this source code is governed by a
+# BSD-style license that can be found in the LICENSE file.
+
+die {
+  echo "$0: error: "\
+       "This script must be run from the root of a flutter engine checkout "\
+       "(containing src/flutter/ and flutter/)" >&2
+  exit 1
+}
+
+ensure_in_checkout_root {
+  set -e
+  if [ ! -e src/third_party/dart ]; then
+    die
+  fi
+
+  if [ ! -e flutter ]; then
+    die
+  fi
+}
+
+get_pinned_dart_version {
+  pinned_dart_sdk=$(grep -E "'dart_revision':.*" src/flutter/DEPS |
+                    sed -E "s/.*'([^']*)',/\1/")
+  echo -n $pinned_dart_sdk
+}
+
+get_pinned_flutter_engine_version {
+  pinned_engine_version=$(cat flutter/bin/internal/engine.version | sed 's/[[:space:]]//')
+  echo -n $pinned_engine_version
+}