Add ImageBitmapRenderingContext (experimental)

third_party/WebKit/Source/core/html/canvas/CanvasRenderingContext.cpp

 /*
  * Copyright (C) 2009 Apple 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
  *    notice, this list of conditions and the following disclaimer in the
  *    documentation and/or other materials provided with the distribution.
  *
  * THIS SOFTWARE IS PROVIDED BY APPLE COMPUTER, INC. ``AS IS'' AND ANY
  * EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
  * PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL APPLE COMPUTER, INC. OR
  * CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
  * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
  * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
  * PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY
  * OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
  * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
  * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
  */
 
 #include "core/html/canvas/CanvasRenderingContext.h"
 
 #include "core/html/canvas/CanvasImageSource.h"
+#include "platform/RuntimeEnabledFeatures.h"
 #include "platform/weborigin/SecurityOrigin.h"
 
 namespace blink {
 
 CanvasRenderingContext::CanvasRenderingContext(HTMLCanvasElement* canvas)
     : m_canvas(canvas)
 {
 }
 
 CanvasRenderingContext::ContextType CanvasRenderingContext::contextTypeFromId(const String& id)
 {
     if (id == "2d")
         return Context2d;
     if (id == "experimental-webgl")
         return ContextExperimentalWebgl;
     if (id == "webgl")
         return ContextWebgl;
     if (id == "webgl2")
         return ContextWebgl2;
-
+    if (id == "imagebitmap" && RuntimeEnabledFeatures::experimentalCanvasFeaturesEnabled()) {
+        return ContextImageBitmap;
+    }
     return ContextTypeCount;
 }
 
 CanvasRenderingContext::ContextType CanvasRenderingContext::resolveContextTypeAliases(CanvasRenderingContext::ContextType type)
 {
     if (type == ContextExperimentalWebgl)
         return ContextWebgl;
     return type;
 }
 
@@ skipping 19 matching lines @@
     }
     return taintOrigin;
 }
 
 DEFINE_TRACE(CanvasRenderingContext)
 {
     visitor->trace(m_canvas);
 }
 
 } // namespace blink