Plumb pinch virtual viewport flag to CC.

This flag will protect the refactoring work for the pinch virtual viewport.

[email protected]
BUG=none
NOTRY=true

Review URL: https://chromiumcodereview.appspot.com/15567005

git-svn-id: svn://svn.chromium.org/chrome/trunk/src@202453 0039d316-1c4b-4281-b951-d872f2087c98
diff --git a/content/browser/web_contents/web_contents_impl.cc b/content/browser/web_contents/web_contents_impl.cc
index eeba6d3f..8a400cd 100644
--- a/content/browser/web_contents/web_contents_impl.cc
+++ b/content/browser/web_contents/web_contents_impl.cc
@@ -538,6 +538,8 @@
       !command_line.HasSwitch(switches::kDisableThreadedHTMLParser);
   prefs.experimental_websocket_enabled =
       command_line.HasSwitch(switches::kEnableExperimentalWebSocket);
+  prefs.pinch_virtual_viewport_enabled =
+      command_line.HasSwitch(cc::switches::kEnablePinchVirtualViewport);
 
 #if defined(OS_ANDROID)
   prefs.user_gesture_required_for_media_playback = !command_line.HasSwitch(