Remove redundant codepath for webgl api blocking

content/renderer/render_frame_impl.cc

 // Copyright 2013 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #include "content/renderer/render_frame_impl.h"
 
 #include <map>
 #include <string>
 #include <utility>
 #include <vector>
@@ skipping 4155 matching lines @@
     return false;
 
   bool blocked = true;
   Send(new FrameHostMsg_Are3DAPIsBlocked(
       routing_id_,
       blink::WebStringToGURL(frame_->top()->getSecurityOrigin().toString()),
       THREE_D_API_TYPE_WEBGL, &blocked));
   return !blocked;
 }
 
-void RenderFrameImpl::didLoseWebGLContext(int arb_robustness_status_code) {
-  Send(new FrameHostMsg_DidLose3DContext(
-      blink::WebStringToGURL(frame_->top()->getSecurityOrigin().toString()),
-      THREE_D_API_TYPE_WEBGL, arb_robustness_status_code));
-}
-
 blink::WebScreenOrientationClient*
     RenderFrameImpl::webScreenOrientationClient() {
   if (!screen_orientation_dispatcher_)
     screen_orientation_dispatcher_ = new ScreenOrientationDispatcher(this);
   return screen_orientation_dispatcher_;
 }
 
 bool RenderFrameImpl::isControlledByServiceWorker(WebDataSource& data_source) {
   ServiceWorkerNetworkProvider* provider =
       ServiceWorkerNetworkProvider::FromDocumentState(
@@ skipping 1835 matching lines @@
                                     int match_count,
                                     int ordinal,
                                     const WebRect& selection_rect,
                                     bool final_status_update) {
   Send(new FrameHostMsg_Find_Reply(routing_id_, request_id, match_count,
                                    selection_rect, ordinal,
                                    final_status_update));
 }
 
 }  // namespace content