publish canvas context API stat metrics

third_party/WebKit/Source/platform/graphics/Canvas2DLayerBridge.cpp

 /*
  * Copyright (C) 2012 Google 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:
  *
  * 1.  Redistributions of source code must retain the above copyright
  *     notice, this list of conditions and the following disclaimer.
  * 2.  Redistributions in binary form must reproduce the above copyright
@@ skipping 14 matching lines @@
 
 #include "config.h"
 
 #include "platform/graphics/Canvas2DLayerBridge.h"
 
 #include "GrContext.h"
 #include "SkDevice.h"
 #include "SkSurface.h"
 
 #include "platform/TraceEvent.h"
+#include "platform/graphics/CanvasMetrics.h"
 #include "platform/graphics/ExpensiveCanvasHeuristicParameters.h"
 #include "platform/graphics/GraphicsLayer.h"
 #include "platform/graphics/ImageBuffer.h"
 #include "platform/graphics/gpu/SharedContextRateLimiter.h"
 #include "public/platform/Platform.h"
 #include "public/platform/WebCompositorSupport.h"
 #include "public/platform/WebGraphicsContext3D.h"
 #include "public/platform/WebGraphicsContext3DProvider.h"
 #include "third_party/skia/include/core/SkData.h"
 #include "third_party/skia/include/core/SkPictureRecorder.h"
@@ skipping 326 matching lines @@
     if (!m_surface)
         return false;
     if (m_contextProvider->context3d()->isContextLost()) {
         m_surface.clear();
         for (auto mailboxInfo = m_mailboxes.begin(); mailboxInfo != m_mailboxes.end(); ++mailboxInfo) {
             if (mailboxInfo->m_image)
                 mailboxInfo->m_image.clear();
         }
         if (m_imageBuffer)
             m_imageBuffer->notifySurfaceInvalid();
+        CanvasMetrics::countCanvasContextStat(CanvasMetrics::Accelerated2DCanvasGPUContextLost);
     }
     return m_surface;
 }
 
 bool Canvas2DLayerBridge::restoreSurface()
 {
     ASSERT(!m_destructionInProgress);
     if (m_destructionInProgress)
         return false;
     ASSERT(isAccelerated() && !m_surface);
@@ skipping 255 matching lines @@
 }
 
 Canvas2DLayerBridge::MailboxInfo::MailboxInfo(const MailboxInfo& other)
 {
     memcpy(&m_mailbox, &other.m_mailbox, sizeof(m_mailbox));
     m_image = other.m_image;
     m_parentLayerBridge = other.m_parentLayerBridge;
 }
 
 } // namespace blink