Drop GraphicsContext::AccessMode

Source/platform/graphics/GraphicsContext.h

 /*
  * Copyright (C) 2003, 2006, 2007, 2008, 2009 Apple Inc. All rights reserved.
  * Copyright (C) 2008-2009 Torch Mobile, Inc.
  * Copyright (C) 2013 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.
@@ skipping 46 matching lines @@
 
 namespace blink {
 
 class DisplayItemList;
 class ImageBuffer;
 class KURL;
 
 class PLATFORM_EXPORT GraphicsContext {
     WTF_MAKE_NONCOPYABLE(GraphicsContext); WTF_MAKE_FAST_ALLOCATED(GraphicsContext);
 public:
-    enum AccessMode {
-        ReadOnly,
-        ReadWrite
-    };
-
     enum DisabledMode {
         NothingDisabled = 0, // Run as normal.
         FullyDisabled = 1 // Do absolutely minimal work to remove the cost of the context from performance tests.
     };
 
     explicit GraphicsContext(DisplayItemList*, DisabledMode = NothingDisabled, SkMetaData* = 0);
 
     // TODO(chrishtr): Once Slimming Paint launches this should be removed (crbug.com/471333).
     // A 0 canvas is allowed, but in such cases the context must only have canvas
     // related commands called when within a beginRecording/endRecording block.
@@ skipping 308 matching lines @@
 
     float m_deviceScaleFactor;
 
     unsigned m_printing : 1;
     unsigned m_hasMetaData : 1;
 };
 
 } // namespace blink
 
 #endif // GraphicsContext_h