Fix data race problem in createImageBitmap(Blob)

third_party/WebKit/Source/core/frame/ImageBitmap.cpp

Index: third_party/WebKit/Source/core/frame/ImageBitmap.cpp
diff --git a/third_party/WebKit/Source/core/frame/ImageBitmap.cpp b/third_party/WebKit/Source/core/frame/ImageBitmap.cpp
index a3a1d3e383122481fe5312ebce086d3f80f56c80..85446d7ba55e79cb9328d6fcc890f03a70bd4f94 100644
--- a/third_party/WebKit/Source/core/frame/ImageBitmap.cpp
+++ b/third_party/WebKit/Source/core/frame/ImageBitmap.cpp
@@ -89,7 +89,7 @@ static PassRefPtr<SkImage> premulSkImageToUnPremul(SkImage* input)
     return newSkImageFromRaster(info, dstPixels.release(), input->width() * info.bytesPerPixel());
 }
 
-PassRefPtr<SkImage> ImageBitmap::getSkImageFromDecoder(PassOwnPtr<ImageDecoder> decoder)
+PassRefPtr<SkImage> getSkImageFromDecoder(PassOwnPtr<ImageDecoder> decoder)
 {
     if (!decoder->frameCount())
         return nullptr;
@@ -127,7 +127,7 @@ static PassRefPtr<StaticBitmapImage> cropImage(Image* image, const IntRect& crop
         if (!decoder)
             return nullptr;
         decoder->setData(image->data(), true);
-        skiaImage = ImageBitmap::getSkImageFromDecoder(decoder.release());
+        skiaImage = getSkImageFromDecoder(decoder.release());
         if (!skiaImage)
             return nullptr;
     }