Expose IsSolidColor and write units tests

cc/resources/picture.h

 // Copyright 2012 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_RESOURCES_PICTURE_H_
 #define CC_RESOURCES_PICTURE_H_
 
 #include <string>
 #include <utility>
 #include <vector>
@@ skipping 56 matching lines @@
   gfx::Rect LayerRect() const { return layer_rect_; }
   gfx::Rect OpaqueRect() const { return opaque_rect_; }
 
   // Get thread-safe clone for rasterizing with on a specific thread.
   Picture* GetCloneForDrawingOnThread(unsigned thread_index);
 
   // Has Record() been called yet?
   bool HasRecording() const { return picture_.get() != NULL; }
 
   bool IsSuitableForGpuRasterization() const;
+  int GetApproximateOpCount() const;

[enne (OOO), 2014/08/20 18:19:26]

style nit: No need for "get" in a function name.

[hendrikw, 2014/08/20 20:46:55]

vmpstr suggested the name :)  I think Get improves readabilty (and in some cases
reduces ambiguity), but I've removed it anyway, in this case it doesn't matter

 
   // Apply this scale and raster the negated region into the canvas.
   // |negated_content_region| specifies the region to be clipped out of the
   // raster operation, i.e., the parts of the canvas which will not get drawn
   // to.
   int Raster(SkCanvas* canvas,
              SkDrawPictureCallback* callback,
              const Region& negated_content_region,
              float contents_scale);
 
+  void RasterForAnalysis(SkCanvas* canvas);
+
   // Draw the picture directly into the given canvas, without applying any
   // clip/scale/layer transformations.
   void Replay(SkCanvas* canvas);
 
   scoped_ptr<base::Value> AsValue() const;
 
   // This iterator imprecisely returns the set of pixel refs that are needed to
   // raster this layer rect from this picture.  Internally, pixel refs are
   // clumped into tile grid buckets, so there may be false positives.
   class CC_EXPORT PixelRefIterator {
@@ skipping 81 matching lines @@
   base::ThreadChecker raster_thread_checker_;
 
   friend class base::RefCountedThreadSafe<Picture>;
   friend class PixelRefIterator;
   DISALLOW_COPY_AND_ASSIGN(Picture);
 };
 
 }  // namespace cc
 
 #endif  // CC_RESOURCES_PICTURE_H_