Expose WEBGL_debug_renderer_info through a chromium finch experiment.

Source/web/FrameLoaderClientImpl.cpp

 /*
  * Copyright (C) 2009, 2012 Google Inc. All rights reserved.
  * Copyright (C) 2011 Apple Inc. All rights reserved.
  *
  * Redistribution and use in source and binary forms, with or without
  * modification, are permitted provided that the following conditions are
  * met:
  *
  *     * Redistributions of source code must retain the above copyright
  * notice, this list of conditions and the following disclaimer.
@@ skipping 736 matching lines @@
 
     return enabledPerSettings;
 }
 
 void FrameLoaderClientImpl::didLoseWebGLContext(int arbRobustnessContextLostReason)
 {
     if (m_webFrame->client())
         m_webFrame->client()->didLoseWebGLContext(m_webFrame, arbRobustnessContextLostReason);
 }
 
+bool FrameLoaderClientImpl::allowWebGLDebugRendererInfo()
+{
+    WebViewImpl* webview = m_webFrame->viewImpl();
+    if (webview && webview->permissionClient())
+        return webview->permissionClient()->allowWebGLDebugRendererInfo(m_webFrame);
+    return false;
+}
+
 void FrameLoaderClientImpl::dispatchWillInsertBody()
 {
     if (m_webFrame->client())
         m_webFrame->client()->willInsertBody(m_webFrame);
 }
 
 PassOwnPtr<WebServiceWorkerProvider> FrameLoaderClientImpl::createServiceWorkerProvider(PassOwnPtr<WebServiceWorkerProviderClient> client)
 {
     if (!m_webFrame->client())
         return nullptr;
     return adoptPtr(m_webFrame->client()->createServiceWorkerProvider(m_webFrame, client.leakPtr()));
 }
 
 void FrameLoaderClientImpl::didStopAllLoaders()
 {
     if (m_webFrame->client())
         m_webFrame->client()->didAbortLoading(m_webFrame);
 }
 
 } // namespace WebKit