cc: Consolidate the analysis_canvas operations

cc/picture_pile_impl.h

Index: cc/picture_pile_impl.h
diff --git a/cc/picture_pile_impl.h b/cc/picture_pile_impl.h
index 157f9e21e6280d5a7a8ae423145caa45d92af43b..57e254097403f0039adf9f2deb2012860443ab2e 100644
--- a/cc/picture_pile_impl.h
+++ b/cc/picture_pile_impl.h
@@ -49,7 +49,13 @@ class CC_EXPORT PicturePileImpl : public PicturePileBase {
     slow_down_raster_scale_factor_for_debug_ = factor;
   }
 
-  bool IsCheapInRect(gfx::Rect content_rect, float contents_scale) const;
+  bool GetColorIfSolidInRect(const gfx::Rect& content_rect,
+                             float contents_scale,
+                             SkColor* color);
+  bool IsCheapInRect(const gfx::Rect& content_rect,
+                     float contents_scale);
+  bool IsTransparentInRect(const gfx::Rect& content_rect,
+                           float contents_scale);
 
  protected:
   friend class PicturePile;
@@ -57,6 +63,22 @@ class CC_EXPORT PicturePileImpl : public PicturePileBase {
   PicturePileImpl();
   virtual ~PicturePileImpl();
 
+  struct Analysis {
+    Analysis();
+
+    bool is_solid_color_;
+    SkColor solid_color_;
+    bool is_transparent_;
+    bool is_cheap_;
+
+    bool is_analyzed_;
+    gfx::Rect analyzed_content_rect_;
+    float analyzed_contents_scale_;
+  } analysis_;
+
+  void AnalyzeInRect(const gfx::Rect& content_rect,
+                     float contents_scale);
+
   typedef std::map<base::PlatformThreadId, scoped_refptr<PicturePileImpl> >
       CloneMap;
   CloneMap clones_;