Bump VM heap size in pub batch files.

sdk/bin/pub.bat

Index: sdk/bin/pub.bat
diff --git a/sdk/bin/pub.bat b/sdk/bin/pub.bat
index 9294231014ab1c6a344984c1df52937a5996bcae..4951d509dad74807355dee1e1982097902043611 100644
--- a/sdk/bin/pub.bat
+++ b/sdk/bin/pub.bat
@@ -23,11 +23,17 @@ set SNAPSHOT=%BIN_DIR%\snapshots\pub.dart.snapshot
 set BUILD_DIR=%SDK_DIR%\..\build\ReleaseIA32
 set PACKAGES_DIR=%BUILD_DIR%\packages
 set DART_IN_BUILT_SDK=%BUILD_DIR%\dart-sdk\bin\dart
+set VM_OPTIONS=
+
+rem Give the VM extra memory for dart2js.
+rem # TODO(rnystrom): Remove when #8355 is fixed.
+rem See comments regarding options below in dart2js shell script.
+set VM_OPTIONS=%VM_OPTIONS% --old_gen_heap_size=1024
 
 if exist "%SNAPSHOT%" (
-  "%DART%" "%SNAPSHOT%" %*
+  "%DART%" %VM_OPTIONS% "%SNAPSHOT%" %*
 ) else (
-  "%DART_IN_BUILT_SDK%" --package-root="%PACKAGES_DIR%" "%PUB%" %*
+  "%DART_IN_BUILT_SDK%" %VM_OPTIONS% --package-root="%PACKAGES_DIR%" "%PUB%" %*
 )
 
 endlocal
@@ -46,4 +52,4 @@ if not "%current%"=="" call :follow_links "%current%", result
 endlocal & set %~2=%result%
 goto :eof
 
-:end
+:end