Revert of Add builders for tracing event's structural arguments

cc/resources/picture_layer_tiling_set.h

Index: cc/resources/picture_layer_tiling_set.h
diff --git a/cc/resources/picture_layer_tiling_set.h b/cc/resources/picture_layer_tiling_set.h
index abef2806fb22430157262b7bc0cd46a7c41b10be..6452dde5d15ddcf1c68da23b58ed50aa0db351ce 100644
--- a/cc/resources/picture_layer_tiling_set.h
+++ b/cc/resources/picture_layer_tiling_set.h
@@ -9,12 +9,6 @@
 #include "cc/base/scoped_ptr_vector.h"
 #include "cc/resources/picture_layer_tiling.h"
 #include "ui/gfx/size.h"
-
-namespace base {
-namespace debug {
-class TracedValue;
-}
-}
 
 namespace cc {
 
@@ -107,7 +101,7 @@
     Region::Iterator region_iter_;
   };
 
-  void AsValueInto(base::debug::TracedValue* array) const;
+  scoped_ptr<base::Value> AsValue() const;
   size_t GPUMemoryUsageInBytes() const;
 
  private: