Rename OwnPtr::clear() to reset() in core/.

third_party/WebKit/Source/core/html/HTMLCanvasElement.cpp

 /*
  * Copyright (C) 2004, 2006, 2007 Apple Inc. All rights reserved.
  * Copyright (C) 2007 Alp Toker <alp@atoker.com>
  * Copyright (C) 2010 Torch Mobile (Beijing) Co. Ltd. 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.
@@ skipping 932 matching lines @@
         needToUpdate |= m_context->paintRenderingResultsToCanvas(sourceBuffer);
     if (needToUpdate && buffer()) {
         m_copiedImage = buffer()->newImageSnapshot(hint);
         updateExternallyAllocatedMemory();
     }
     return m_copiedImage;
 }
 
 void HTMLCanvasElement::discardImageBuffer()
 {
-    m_imageBuffer.clear();
+    m_imageBuffer.reset();
     m_dirtyRect = FloatRect();
     updateExternallyAllocatedMemory();
 }
 
 void HTMLCanvasElement::clearCopiedImage()
 {
     if (m_copiedImage) {
         m_copiedImage.clear();
         updateExternallyAllocatedMemory();
     }
@@ skipping 171 matching lines @@
         return m_context->getIdFromControl(element);
     return String();
 }
 
 void HTMLCanvasElement::createSurfaceLayerBridge()
 {
     m_surfaceLayerBridge = adoptPtr(new CanvasSurfaceLayerBridge());
 }
 
 } // namespace blink