Remove CSSCompositing

sky/engine/bindings/core/v8/custom/V8HTMLCanvasElementCustom.cpp

 /*
  * Copyright (C) 2007-2009 Google Inc. All rights reserved.
  * 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:
  *
  *     * Redistributions of source code must retain the above copyright
  * notice, this list of conditions and the following disclaimer.
@@ skipping 65 matching lines @@
             v8::Handle<v8::String> preserveDrawingBuffer = v8AtomicString(isolate, "preserveDrawingBuffer");
             if (jsAttributes->Has(preserveDrawingBuffer) && !isUndefinedOrNull(jsAttributes->Get(preserveDrawingBuffer)))
                 webGLAttributes->setPreserveDrawingBuffer(jsAttributes->Get(preserveDrawingBuffer)->BooleanValue());
             v8::Handle<v8::String> failIfMajorPerformanceCaveat = v8AtomicString(isolate, "failIfMajorPerformanceCaveat");
             if (jsAttributes->Has(failIfMajorPerformanceCaveat) && !isUndefinedOrNull(jsAttributes->Get(failIfMajorPerformanceCaveat)))
                 webGLAttributes->setFailIfMajorPerformanceCaveat(jsAttributes->Get(failIfMajorPerformanceCaveat)->BooleanValue());
         }
         attributes = webGLAttributes;
     } else {
         RefPtr<Canvas2DContextAttributes> canvas2DAttributes = Canvas2DContextAttributes::create();
-        if (info.Length() > 1 && info[1]->IsObject()) {
-            v8::Handle<v8::Object> jsAttributes = info[1]->ToObject();
-            v8::Handle<v8::String> alpha = v8AtomicString(isolate, "alpha");
-            if (jsAttributes->Has(alpha) && !isUndefinedOrNull(jsAttributes->Get(alpha)))
-                canvas2DAttributes->setAlpha(jsAttributes->Get(alpha)->BooleanValue());
-        }
         attributes = canvas2DAttributes;
     }
     CanvasRenderingContext* result = impl->getContext(contextId, attributes.get());
     if (!result) {
         v8SetReturnValueNull(info);
         return;
     }
     if (result->is2d()) {
         v8::Handle<v8::Value> v8Result = toV8(toCanvasRenderingContext2D(result), info.Holder(), info.GetIsolate());
         v8SetReturnValue(info, v8Result);
@@ skipping 21 matching lines @@
         quality = info[1]->NumberValue();
         qualityPtr = &quality;
     }
 
     String result = canvas->toDataURL(type, qualityPtr, exceptionState);
     exceptionState.throwIfNeeded();
     v8SetReturnValueStringOrUndefined(info, result, info.GetIsolate());
 }
 
 } // namespace blink