Reenable SwiftShader

The crash bugs weren't related to SwiftShader, so enable it again.

BUG=26001
TEST=


Review URL: http://codereview.chromium.org/9088006

git-svn-id: svn://svn.chromium.org/chrome/trunk/src@116429 0039d316-1c4b-4281-b951-d872f2087c98
diff --git a/build/common.gypi b/build/common.gypi
index 7e0f3cb..bc6b71b 100644
--- a/build/common.gypi
+++ b/build/common.gypi
@@ -1207,6 +1207,9 @@
           'ENABLE_WEB_INTENTS=1',
         ],
       }],
+      ['OS=="win" and branding=="Chrome"', {
+        'defines': ['ENABLE_SWIFTSHADER'],
+      }],
       ['enable_dart==1', {
         'defines': ['WEBKIT_USING_DART=1'],
       }],