Update gallery icons with new logo (#16900)

examples/flutter_gallery/ios/Runner/Assets.xcassets/AppIcon.appiconset/Contents.json

@@ -3,115 +3,115 @@
     {
       "size" : "20x20",
       "idiom" : "iphone",
-      "filename" : "Icon-App-20x20@2x.png",
+      "filename" : "Icon-40.png",
       "scale" : "2x"
     },
     {
       "size" : "20x20",
       "idiom" : "iphone",
-      "filename" : "Icon-App-20x20@3x.png",
+      "filename" : "Icon-60.png",
       "scale" : "3x"
     },
     {
       "size" : "29x29",
       "idiom" : "iphone",
-      "filename" : "Icon-App-29x29@1x.png",
+      "filename" : "Icon-29.png",
       "scale" : "1x"
     },
     {
       "size" : "29x29",
       "idiom" : "iphone",
-      "filename" : "Icon-App-29x29@2x.png",
+      "filename" : "Icon-58.png",
       "scale" : "2x"
     },
     {
       "size" : "29x29",
       "idiom" : "iphone",
-      "filename" : "Icon-App-29x29@3x.png",
+      "filename" : "Icon-87.png",
       "scale" : "3x"
     },
     {
       "size" : "40x40",
       "idiom" : "iphone",
-      "filename" : "Icon-App-40x40@2x.png",
+      "filename" : "Icon-80.png",
       "scale" : "2x"
     },
     {
       "size" : "40x40",
       "idiom" : "iphone",
-      "filename" : "Icon-App-40x40@3x.png",
+      "filename" : "Icon-120.png",
       "scale" : "3x"
     },
     {
       "size" : "60x60",
       "idiom" : "iphone",
-      "filename" : "Icon-App-60x60@2x.png",
+      "filename" : "Icon-120.png",
       "scale" : "2x"
     },
     {
       "size" : "60x60",
       "idiom" : "iphone",
-      "filename" : "Icon-App-60x60@3x.png",
+      "filename" : "Icon-180.png",
       "scale" : "3x"
     },
     {
       "size" : "20x20",
       "idiom" : "ipad",
-      "filename" : "Icon-App-20x20@1x.png",
+      "filename" : "Icon-20.png",
       "scale" : "1x"
     },
     {
       "size" : "20x20",
       "idiom" : "ipad",
-      "filename" : "Icon-App-20x20@2x.png",
+      "filename" : "Icon-40.png",
       "scale" : "2x"
     },
     {
       "size" : "29x29",
       "idiom" : "ipad",
-      "filename" : "Icon-App-29x29@1x.png",
+      "filename" : "Icon-29.png",
       "scale" : "1x"
     },
     {
       "size" : "29x29",
       "idiom" : "ipad",
-      "filename" : "Icon-App-29x29@2x.png",
+      "filename" : "Icon-58.png",
       "scale" : "2x"
     },
     {
       "size" : "40x40",
       "idiom" : "ipad",
-      "filename" : "Icon-App-40x40@1x.png",
+      "filename" : "Icon-40.png",
       "scale" : "1x"
     },
     {
       "size" : "40x40",
       "idiom" : "ipad",
-      "filename" : "Icon-App-40x40@2x.png",
+      "filename" : "Icon-80.png",
       "scale" : "2x"
     },
     {
       "size" : "76x76",
       "idiom" : "ipad",
-      "filename" : "Icon-App-76x76@1x.png",
+      "filename" : "Icon-76.png",
       "scale" : "1x"
     },
     {
       "size" : "76x76",
       "idiom" : "ipad",
-      "filename" : "Icon-App-76x76@2x.png",
+      "filename" : "Icon-152.png",
       "scale" : "2x"
     },
     {
       "size" : "83.5x83.5",
       "idiom" : "ipad",
-      "filename" : "Icon-App-83.5x83.5@2x.png",
+      "filename" : "Icon-167.png",
       "scale" : "2x"
     },
     {
       "size" : "1024x1024",
       "idiom" : "ios-marketing",
-      "filename" : "Icon-App-1024x1024@1x.png",
+      "filename" : "Icon-1024.png",
       "scale" : "1x"
     }
   ],