cc: Add color space to image decode caches

cc/paint/display_item_list.h

 // Copyright 2014 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #ifndef CC_PAINT_DISPLAY_ITEM_LIST_H_
 #define CC_PAINT_DISPLAY_ITEM_LIST_H_
 
 #include <stddef.h>
 
 #include <memory>
@@ skipping 122 matching lines @@
 
   int ApproximateOpCount() const;
   size_t ApproximateMemoryUsage() const;
   bool ShouldBeAnalyzedForSolidColor() const;
 
   void EmitTraceSnapshot() const;
 
   void GenerateDiscardableImagesMetadata();
   void GetDiscardableImagesInRect(const gfx::Rect& rect,
                                   float contents_scale,
+                                  const gfx::ColorSpace& target_color_space,
                                   std::vector<DrawImage>* images);
   gfx::Rect GetRectForImage(ImageId image_id) const;
 
   void SetRetainVisualRectsForTesting(bool retain) {
     retain_visual_rects_ = retain;
   }
 
   size_t size() const { return items_.size(); }
 
   gfx::Rect VisualRectForTesting(int index) { return visual_rects_[index]; }
@@ skipping 46 matching lines @@
   bool retain_visual_rects_ = false;
 
   friend class base::RefCountedThreadSafe<DisplayItemList>;
   FRIEND_TEST_ALL_PREFIXES(DisplayItemListTest, ApproximateMemoryUsage);
   DISALLOW_COPY_AND_ASSIGN(DisplayItemList);
 };
 
 }  // namespace cc
 
 #endif  // CC_PAINT_DISPLAY_ITEM_LIST_H_