Travis / chrome fixes

- Use google-chrome-stable by default
- Use google-chrome-unstable as Canary (instead of trying to determine last-known-good-revision - we has issues with that yesterday)
- Test chrome stable and unstable separately on travis

Try bot:
https://travis-ci.org/dart-lang/sdk/builds/165541943

R=kevmoo@google.com

Review URL: https://codereview.chromium.org/2396433007 .

.travis.yml

@@ -30,6 +30,15 @@ before_install:
 
   - if [ "$CXX" ]; then $CXX --version ; fi
 
+  # Chrome install
+  - wget https://dl.google.com/linux/direct/google-chrome-stable_current_amd64.deb
+  - wget https://dl.google.com/linux/direct/google-chrome-unstable_current_amd64.deb
+  - sudo dpkg -i google-chrome*.deb
+  - /usr/bin/google-chrome --version
+  - export CHROME_BIN=/usr/bin/google-chrome
+  - /usr/bin/google-chrome-unstable --version
+  - export CHROME_CANARY_BIN=/usr/bin/google-chrome-unstable
+
   # Install Depot Tools
   - git clone https://chromium.googlesource.com/chromium/tools/depot_tools.git
   - export PATH=`pwd`/depot_tools:"$PATH"
@@ -48,7 +57,6 @@ before_install:
   # DDC setup
   - cd pkg/dev_compiler
   - pub global activate dart_coveralls
-  - export CHROME_CANARY_BIN=`./tool/get_chrome_canary.sh`
   - export DISPLAY=:99.0
   - sh -e /etc/init.d/xvfb start
 install:
@@ -65,10 +73,10 @@ script:
 env:
   - ANALYZER=master
   - ANALYZER=master DDC_BROWSERS=Firefox
+  - ANALYZER=master DDC_BROWSERS=ChromeCanaryTravis
   - ANALYZER=master CXX=g++
   - ANALYZER=master CXX=clang++
   - TEST=coverage
-  - TEST=node
 matrix:
   allow_failures:
     - env: TEST=node

pkg/dev_compiler/karma.conf.js

@@ -62,12 +62,12 @@ module.exports = function(config) {
     // start these browsers
     // available browser launchers: https://npmjs.org/browse/keyword/karma-launcher
     customLaunchers: {
-      chrome_travis: {
+      ChromeTravis: {
         base: 'Chrome',
         flags: [ '--no-sandbox' ]
       },
 
-      chrome_canary_travis: {
+      ChromeCanaryTravis: {
         base: 'ChromeCanary',
         flags: [ '--no-sandbox' ]
       },
@@ -81,7 +81,7 @@ module.exports = function(config) {
   };
 
   if (process.env.TRAVIS) {
-    configuration.browsers = ['chrome_canary_travis'];
+    configuration.browsers = ['ChromeTravis'];
     configuration.autoWatch = false;
     // Enable this for more logging on Travis.  It is too much for Travis to
     // automatically display, but still results in a downloadable raw log.

pkg/dev_compiler/tool/get_chrome_canary.sh

@@ -35,9 +35,7 @@ fi
 readonly CHROME_CANARY_DIR=$HOME/.chrome/canary
 readonly CHROME_CANARY_BIN=$CHROME_CANARY_DIR/$CHROME_NAME/$CHROME_RELATIVE_BIN
 readonly CHROME_CANARY_REV_FILE=$CHROME_CANARY_DIR/VERSION
-# FIXME(vsm): The latest chromium segfaults on travis and my local linux box.
-# readonly CHROME_REV=$(curl -s ${CHROME_URL}/LAST_CHANGE)
-readonly CHROME_REV=423167
+readonly CHROME_REV=$(curl -s ${CHROME_URL}/LAST_CHANGE)
 
 function getCanary() {
   local existing_version=""