build against both stable and dev channels of Dart

.travis.yml

@@ -4,11 +4,13 @@ node_js:
 - '0.10'
 env:
   global:
-  - CHANNEL=stable
   - KARMA_BROWSERS=DartiumWithWebPlatform
   - E2E_BROWSERS=Dartium
   - LOGS_DIR=/tmp/angular-build/logs
   - ARCH=linux-x64
+  matrix:
+  - CHANNEL=stable
+  - CHANNEL=dev
 
 before_install:
 - export DISPLAY=:99.0

scripts/ci/install_dart.sh

@@ -7,15 +7,7 @@ AVAILABLE_DART_VERSION=$(curl "https://storage.googleapis.com/dart-archive/chann
 
 echo Fetch Dart channel: $CHANNEL
 
-SVN_REVISION=latest
-# TODO(chirayu): Remove this once issue 20896 is fixed.
-# Dart 1.7.0-dev.1.0 and 1.7.0-dev.2.0 are both broken so use version
-# 1.7.0-dev.0.1 instead.
-if [[ "$AVAILABLE_DART_VERSION" == "1.7.0-dev.2.0" ]]; then
-  SVN_REVISION=39661  # Use version 1.7.0-dev.0.1
-fi
-
-URL_PREFIX=https://storage.googleapis.com/dart-archive/channels/$CHANNEL/release/$SVN_REVISION
+URL_PREFIX=https://storage.googleapis.com/dart-archive/channels/$CHANNEL/release/latest
 DART_SDK_URL="$URL_PREFIX/sdk/dartsdk-$ARCH-release.zip"
 DARTIUM_URL="$URL_PREFIX/dartium/dartium-$ARCH-release.zip"