Add builders for tracing event's structural arguments

cc/debug/traced_value.h

Index: cc/debug/traced_value.h
diff --git a/cc/debug/traced_value.h b/cc/debug/traced_value.h
index 560eaf8307b434fca87e668f4d0164f3d4867fd8..ccada4ac59bebadb3653513ab2829e81be955347 100644
--- a/cc/debug/traced_value.h
+++ b/cc/debug/traced_value.h
@@ -13,6 +13,9 @@
 namespace base {
 class DictionaryValue;
 class Value;
+namespace debug {
+class TracedValue;
+}
 }
 namespace cc {
 
@@ -32,6 +35,24 @@ class TracedValue : public base::debug::ConvertableToTraceFormat {
       const char* object_base_type_name,
       const char* object_name,
       const void* id);
+  static void AppendIDRef(const void* id, base::debug::TracedValue* array);
+  static void SetIDRef(const void* id,
+                       base::debug::TracedValue* dict,
+                       const char* name);
+  static void MakeDictIntoImplicitSnapshot(base::debug::TracedValue* dict,
+                                           const char* object_name,
+                                           const void* id);
+  static void MakeDictIntoImplicitSnapshotWithCategory(
+      const char* category,
+      base::debug::TracedValue* dict,
+      const char* object_name,
+      const void* id);
+  static void MakeDictIntoImplicitSnapshotWithCategory(
+      const char* category,
+      base::debug::TracedValue* dict,
+      const char* object_base_type_name,
+      const char* object_name,
+      const void* id);
   static scoped_refptr<base::debug::ConvertableToTraceFormat> FromValue(
       base::Value* value);
 
@@ -46,17 +67,6 @@ class TracedValue : public base::debug::ConvertableToTraceFormat {
   DISALLOW_COPY_AND_ASSIGN(TracedValue);
 };
 
-template <class T>
-static scoped_refptr<base::debug::ConvertableToTraceFormat> ToTrace(T* t) {
-  return TracedValue::FromValue(t->AsValue().release());
-}
-
-template <class T>
-static scoped_refptr<base::debug::ConvertableToTraceFormat> ToTrace(
-    const T& t) {
-  return ToTrace(&t);
-}
-
 }  // namespace cc
 
 #endif  // CC_DEBUG_TRACED_VALUE_H_