Removing the dependency on GraphicsContext for drawing images in 2D canvas

Source/platform/graphics/GradientGeneratedImage.cpp

Index: Source/platform/graphics/GradientGeneratedImage.cpp
diff --git a/Source/platform/graphics/GradientGeneratedImage.cpp b/Source/platform/graphics/GradientGeneratedImage.cpp
index 645664f142a8d70c84d758c594b21be1ac9beabf..42cdfd3fc15767c3a418c12d69926901ca49aacb 100644
--- a/Source/platform/graphics/GradientGeneratedImage.cpp
+++ b/Source/platform/graphics/GradientGeneratedImage.cpp
@@ -31,16 +31,18 @@
 
 namespace blink {
 
-void GradientGeneratedImage::draw(GraphicsContext* destContext, const FloatRect& destRect, const FloatRect& srcRect, SkXfermode::Mode compositeOp, RespectImageOrientationEnum)
+void GradientGeneratedImage::draw(SkCanvas* canvas, const SkPaint& paint, const FloatRect& destRect, const FloatRect& srcRect, RespectImageOrientationEnum)
 {
-    GraphicsContextStateSaver stateSaver(*destContext);
-    destContext->clip(destRect);
-    destContext->translate(destRect.x(), destRect.y());
+    canvas->save();

[f(malita), 2015/04/17 16:18:32]

Nit: ditto

+    canvas->clipRect(destRect);
+    canvas->translate(destRect.x(), destRect.y());
     if (destRect.size() != srcRect.size())
-        destContext->scale(destRect.width() / srcRect.width(), destRect.height() / srcRect.height());
-    destContext->translate(-srcRect.x(), -srcRect.y());
-    destContext->setFillGradient(m_gradient);
-    destContext->fillRect(FloatRect(FloatPoint(), m_size), destContext->fillColor(), compositeOp);
+        canvas->scale(destRect.width() / srcRect.width(), destRect.height() / srcRect.height());
+    canvas->translate(-srcRect.x(), -srcRect.y());
+    SkPaint gradientPaint(paint);
+    gradientPaint.setShader(m_gradient->shader());
+    canvas->drawRect(SkRect::MakeWH(m_size.width(), m_size.height()), gradientPaint);
+    canvas->restore();
 }
 
 void GradientGeneratedImage::drawTile(GraphicsContext* context, const FloatRect& srcRect)