Check display list canvas fall back reason unknown

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

 // Copyright 2014 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 "platform/graphics/RecordingImageBufferSurface.h"
 
 #include "platform/Histogram.h"
 #include "platform/graphics/CanvasMetrics.h"
 #include "platform/graphics/ExpensiveCanvasHeuristicParameters.h"
 #include "platform/graphics/GraphicsContext.h"
@@ skipping 54 matching lines @@
             willOverwriteCanvas();
         }
         fallBackToRasterCanvas(FallbackReasonWritePixels);
     }
     return m_fallbackSurface->writePixels(origInfo, pixels, rowBytes, x, y);
 }
 
 void RecordingImageBufferSurface::fallBackToRasterCanvas(FallbackReason reason)
 {
     ASSERT(m_fallbackFactory);
-    DCHECK(reason != FallbackReasonUnknown);
+    CHECK(reason != FallbackReasonUnknown);
 
     if (m_fallbackSurface) {
         ASSERT(!m_currentFrame);
         return;
     }
 
     DEFINE_THREAD_SAFE_STATIC_LOCAL(EnumerationHistogram, canvasFallbackHistogram, new EnumerationHistogram("Canvas.DisplayListFallbackReason", FallbackReasonCount));
     canvasFallbackHistogram.count(reason);
 
     m_fallbackSurface = m_fallbackFactory->createSurface(size(), getOpacityMode());
@@ skipping 274 matching lines @@
 
 void RecordingImageBufferSurface::setIsHidden(bool hidden)
 {
     if (m_fallbackSurface)
         m_fallbackSurface->setIsHidden(hidden);
     else
         ImageBufferSurface::setIsHidden(hidden);
 }
 
 } // namespace blink