Revert of Add builders for tracing event's structural arguments

cc/resources/picture_layer_tiling.h

Index: cc/resources/picture_layer_tiling.h
diff --git a/cc/resources/picture_layer_tiling.h b/cc/resources/picture_layer_tiling.h
index e6a5847d4d5c1b42e62a970d437dd8d06156f5f0..808d57586d30bf2e8e768ee7c26eecbedc7a025e 100644
--- a/cc/resources/picture_layer_tiling.h
+++ b/cc/resources/picture_layer_tiling.h
@@ -17,12 +17,6 @@
 #include "cc/resources/tile.h"
 #include "cc/resources/tile_priority.h"
 #include "ui/gfx/rect.h"
-
-namespace base {
-namespace debug {
-class TracedValue;
-}
-}
 
 namespace cc {
 
@@ -248,7 +242,7 @@
     return frame_time_in_seconds != last_impl_frame_time_in_seconds_;
   }
 
-  void AsValueInto(base::debug::TracedValue* array) const;
+  scoped_ptr<base::Value> AsValue() const;
   size_t GPUMemoryUsageInBytes() const;
 
   struct RectExpansionCache {