Advance image animations when drawing as shaders

third_party/WebKit/Source/platform/graphics/Image.cpp

 /*
  * Copyright (C) 2006 Samuel Weinig (sam.weinig@gmail.com)
  * Copyright (C) 2004, 2005, 2006 Apple Computer, 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
@@ skipping 255 matching lines @@
 bool Image::applyShader(SkPaint& paint, const SkMatrix& localMatrix)
 {
     // Default shader impl: attempt to build a shader based on the current frame SkImage.
     sk_sp<SkImage> image = imageForCurrentFrame();
     if (!image)
         return false;
 
     paint.setShader(
         image->makeShader(SkShader::kRepeat_TileMode, SkShader::kRepeat_TileMode, &localMatrix));
 
+    // Animation is normally refreshed in draw() impls, which we don't call when painting via shaders.
+    startAnimation();
+
     return true;
 }
 
 FloatRect Image::computeTileContaining(const FloatPoint& point,
     const FloatSize& tileSize, const FloatPoint& tilePhase, const FloatSize& tileSpacing)
 {
     const FloatSize actualTileSize(tileSize + tileSpacing);
     return FloatRect(
         FloatPoint(
             point.x() + fmodf(fmodf(-tilePhase.x(), actualTileSize.width()) - actualTileSize.width(), actualTileSize.width()),
@@ skipping 12 matching lines @@
     FloatRect subset = dest;
     subset.setX((dest.x() - tile.x()) / scale.width());
     subset.setY((dest.y() - tile.y()) / scale.height());
     subset.setWidth(dest.width() / scale.width());
     subset.setHeight(dest.height() / scale.height());
 
     return subset;
 }
 
 } // namespace blink