cc: Add frame data to LTHI tracing

cc/quads/shared_quad_state.h

Index: cc/quads/shared_quad_state.h
diff --git a/cc/quads/shared_quad_state.h b/cc/quads/shared_quad_state.h
index eb3e91eaedb905235e77efd599d7c065791aadea..79bd09b60f7e1ffb3603a4cb331af7da95ea76f6 100644
--- a/cc/quads/shared_quad_state.h
+++ b/cc/quads/shared_quad_state.h
@@ -10,6 +10,10 @@
 #include "ui/gfx/rect.h"
 #include "ui/gfx/transform.h"
 
+namespace base {
+class Value;
+}
+
 namespace cc {
 
 class CC_EXPORT SharedQuadState {
@@ -25,12 +29,15 @@ class CC_EXPORT SharedQuadState {
               gfx::Rect clip_rect,
               bool is_clipped,
               float opacity);
+  scoped_ptr<base::Value> AsValue() const;
 
   // Transforms from quad's original content space to its target content space.
   gfx::Transform content_to_target_transform;
-  // This rect lives in the content space for the quad's originating layer.
+  // This size lives in the content space for the quad's originating layer.
   gfx::Size content_bounds;
+  // This rect lives in the content space for the quad's originating layer.
   gfx::Rect visible_content_rect;
+  // This rect lives in the target content space.
   gfx::Rect clip_rect;
   bool is_clipped;
   float opacity;