Remove noop enterForceCompositingMode call

BUG=none

Review URL: https://codereview.chromium.org/323633002

git-svn-id: svn://svn.chromium.org/chrome/trunk/src@275697 0039d316-1c4b-4281-b951-d872f2087c98

content/renderer/render_widget.cc

@@ -489,8 +489,6 @@ void RenderWidget::CompleteInit() {
 
   init_complete_ = true;
 
-  if (webwidget_)
-    webwidget_->enterForceCompositingMode(true);
   if (compositor_)
     StartCompositor();