[WIP] cc: Use sRGB for rastering non-wide-color-gamut content

cc/raster/raster_source.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_RASTER_RASTER_SOURCE_H_
 #define CC_RASTER_RASTER_SOURCE_H_
 
 #include <stddef.h>
 
 #include <memory>
@@ skipping 75 matching lines @@
   virtual void PlaybackToCanvas(SkCanvas* canvas,
                                 const gfx::ColorSpace& target_color_space,
                                 const PlaybackSettings& settings) const;
 
   // 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,
                                  SkColor* color) const;
 
+  // Returns true iff there exists content in the raster source that was not
+  // originally specified in SRGB color space.
+  bool HasNonSRGBContent() const;
+
   // Returns true iff the whole raster source is of solid color.
   bool IsSolidColor() const;
 
   // Returns the color of the raster source if it is solid color. The results
   // are unspecified if IsSolidColor returns false.
   SkColor GetSolidColor() const;
 
   // Returns the size of this raster source.
   gfx::Size GetSize() const;
 
@@ skipping 65 matching lines @@
                     SkPicture::AbortCallback* callback) const;
 
   void PrepareForPlaybackToCanvas(SkCanvas* canvas) const;
 
   DISALLOW_COPY_AND_ASSIGN(RasterSource);
 };
 
 }  // namespace cc
 
 #endif  // CC_RASTER_RASTER_SOURCE_H_