Devtools: Remove continuous repainting feature

Source/web/InspectorRenderingAgent.h

 // Copyright 2015 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 InspectorRenderingAgent_h
 #define InspectorRenderingAgent_h
 
 #include "core/InspectorFrontend.h"
 #include "core/inspector/InspectorBaseAgent.h"
 
 namespace blink {
 
 class WebViewImpl;
 
 using ErrorString = String;
 
 class InspectorRenderingAgent final : public InspectorBaseAgent<InspectorRenderingAgent, InspectorFrontend::Rendering>, public InspectorBackendDispatcher::RenderingCommandHandler {
     WTF_MAKE_NONCOPYABLE(InspectorRenderingAgent);
 public:
     static PassOwnPtrWillBeRawPtr<InspectorRenderingAgent> create(WebViewImpl*);
 
     // InspectorBackendDispatcher::PageCommandHandler implementation.
     void setShowPaintRects(ErrorString*, bool show) override;
     void setShowDebugBorders(ErrorString*, bool show) override;
     void setShowFPSCounter(ErrorString*, bool show) override;
-    void setContinuousPaintingEnabled(ErrorString*, bool enabled) override;
     void setShowScrollBottleneckRects(ErrorString*, bool show) override;
 
     // InspectorBaseAgent overrides.
     void disable(ErrorString*) override;
     void restore() override;
 
     DECLARE_VIRTUAL_TRACE();
 
 private:
     explicit InspectorRenderingAgent(WebViewImpl*);
     bool compositingEnabled(ErrorString*);
 
     WebViewImpl* m_webViewImpl;
 };
 
 
 } // namespace blink
 
 
 #endif // !defined(InspectorRenderingAgent_h)