Remove redundant codepath for webgl api blocking

content/renderer/render_frame_impl.h

 // 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.
 
 #ifndef CONTENT_RENDERER_RENDER_FRAME_IMPL_H_
 #define CONTENT_RENDERER_RENDER_FRAME_IMPL_H_
 
 #include <stddef.h>
 #include <stdint.h>
 
@@ skipping 564 matching lines @@
   blink::WebEncryptedMediaClient* encryptedMediaClient() override;
   blink::WebMIDIClient* webMIDIClient() override;
   bool willCheckAndDispatchMessageEvent(
       blink::WebLocalFrame* source_frame,
       blink::WebFrame* target_frame,
       blink::WebSecurityOrigin target_origin,
       blink::WebDOMMessageEvent event) override;
   blink::WebString userAgentOverride() override;
   blink::WebString doNotTrackValue() override;
   bool allowWebGL(bool default_value) override;
-  void didLoseWebGLContext(int arb_robustness_status_code) override;
   blink::WebScreenOrientationClient* webScreenOrientationClient() override;
   bool isControlledByServiceWorker(blink::WebDataSource& data_source) override;
   int64_t serviceWorkerID(blink::WebDataSource& data_source) override;
   void postAccessibilityEvent(const blink::WebAXObject& obj,
                               blink::WebAXEvent event) override;
   void handleAccessibilityFindInPageResult(
       int identifier,
       int match_index,
       const blink::WebAXObject& start_object,
       int start_offset,
@@ skipping 605 matching lines @@
 #endif
 
   base::WeakPtrFactory<RenderFrameImpl> weak_factory_;
 
   DISALLOW_COPY_AND_ASSIGN(RenderFrameImpl);
 };
 
 }  // namespace content
 
 #endif  // CONTENT_RENDERER_RENDER_FRAME_IMPL_H_