Implement ImageBitmap options premultiplyAlpha

third_party/WebKit/Source/core/imagebitmap/ImageBitmapFactories.cpp

Index: third_party/WebKit/Source/core/imagebitmap/ImageBitmapFactories.cpp
diff --git a/third_party/WebKit/Source/core/imagebitmap/ImageBitmapFactories.cpp b/third_party/WebKit/Source/core/imagebitmap/ImageBitmapFactories.cpp
index 2d6fa0db8f52f59d3de3caa0678281cbf38ffe4f..261a7c976b07ce316773402d0b0eea226927ec93 100644
--- a/third_party/WebKit/Source/core/imagebitmap/ImageBitmapFactories.cpp
+++ b/third_party/WebKit/Source/core/imagebitmap/ImageBitmapFactories.cpp
@@ -68,6 +68,7 @@ static inline ImageBitmapSource* toImageBitmapSourceInternal(const ImageBitmapSo
 ScriptPromise ImageBitmapFactories::createImageBitmap(ScriptState* scriptState, EventTarget& eventTarget, const ImageBitmapSourceUnion& bitmapSource, ExceptionState& exceptionState)
 {
     ImageBitmapOptions options;
+    options.setPremultiplyAlpha(true);
     return createImageBitmap(scriptState, eventTarget, bitmapSource, options, exceptionState);
 }
 
@@ -89,6 +90,7 @@ ScriptPromise ImageBitmapFactories::createImageBitmap(ScriptState* scriptState,
 ScriptPromise ImageBitmapFactories::createImageBitmap(ScriptState* scriptState, EventTarget& eventTarget, const ImageBitmapSourceUnion& bitmapSource, int sx, int sy, int sw, int sh, ExceptionState& exceptionState)
 {
     ImageBitmapOptions options;
+    options.setPremultiplyAlpha(true);
     return createImageBitmap(scriptState, eventTarget, bitmapSource, sx, sy, sw, sh, options, exceptionState);
 }
 
@@ -157,8 +159,8 @@ ImageBitmapFactories::ImageBitmapLoader::ImageBitmapLoader(ImageBitmapFactories&
     , m_factory(&factory)
     , m_resolver(ScriptPromiseResolver::create(scriptState))
     , m_cropRect(cropRect)
-    , m_options(options)
 {
+    m_options.setPremultiplyAlpha(true);
 }
 
 void ImageBitmapFactories::ImageBitmapLoader::loadBlobAsync(ExecutionContext* context, Blob* blob)