Implements core logic for Pixel Canvas

cc/raster/raster_source.h

Index: cc/raster/raster_source.h
diff --git a/cc/raster/raster_source.h b/cc/raster/raster_source.h
index 92e429bd24fe37f8b560233e25569fdcaf369f15..077bd62a2e3fbe9978a6da2e934fdf5e4538d376 100644
--- a/cc/raster/raster_source.h
+++ b/cc/raster/raster_source.h
@@ -89,8 +89,8 @@ class CC_EXPORT RasterSource : public base::RefCountedThreadSafe<RasterSource> {
 
   // Returns whether the given rect at given scale is of solid color in
   // this raster source, as well as the solid color value.
-  bool PerformSolidColorAnalysis(const gfx::Rect& content_rect,
-                                 float contents_scale,
+  bool PerformSolidColorAnalysis(gfx::Rect content_rect,
+                                 const gfx::AxisTransform2d& raster_transform,
                                  SkColor* color) const;
 
   // Returns true iff the whole raster source is of solid color.