Remove 3-arg initializeLayerTreeView implementation

WebViewImpl calls the no-argument version of this function.

R=piman@chromium.org


Review URL: https://chromiumcodereview.appspot.com/12836003

git-svn-id: svn://svn.chromium.org/chrome/trunk/src@188962 0039d316-1c4b-4281-b951-d872f2087c98
2 files changed