Further plumb visual rect into cc:DisplayItemList.

cc/playback/clip_path_display_item.cc

Index: cc/playback/clip_path_display_item.cc
diff --git a/cc/playback/clip_path_display_item.cc b/cc/playback/clip_path_display_item.cc
index a5037a21b073f65debc3ebe76ebfabbe62d16429..2168ee1f9cd8a2c1cea4c604382477ac9684a19b 100644
--- a/cc/playback/clip_path_display_item.cc
+++ b/cc/playback/clip_path_display_item.cc
@@ -72,9 +72,11 @@ void ClipPathDisplayItem::Raster(SkCanvas* canvas,
 }
 
 void ClipPathDisplayItem::AsValueInto(
+    const gfx::Rect& visual_rect,
     base::trace_event::TracedValue* array) const {
-  array->AppendString(base::StringPrintf("ClipPathDisplayItem length: %d",
-                                         clip_path_.countPoints()));
+  array->AppendString(base::StringPrintf(
+      "ClipPathDisplayItem length: %d visualRect: [%s]",
+      clip_path_.countPoints(), visual_rect.ToString().c_str()));
 }
 
 EndClipPathDisplayItem::EndClipPathDisplayItem() {
@@ -101,8 +103,11 @@ void EndClipPathDisplayItem::Raster(
 }
 
 void EndClipPathDisplayItem::AsValueInto(
+    const gfx::Rect& visual_rect,
     base::trace_event::TracedValue* array) const {
-  array->AppendString("EndClipPathDisplayItem");
+  array->AppendString(
+      base::StringPrintf("EndClipPathDisplayItem visualRect: [%s]",
+                         visual_rect.ToString().c_str()));
 }
 
 }  // namespace cc