Introduce infrastructure for tracing ScriptWrappables.

third_party/WebKit/Source/bindings/core/v8/ActiveScriptWrappable.cpp

Index: third_party/WebKit/Source/bindings/core/v8/ActiveScriptWrappable.cpp
diff --git a/third_party/WebKit/Source/bindings/core/v8/ActiveScriptWrappable.cpp b/third_party/WebKit/Source/bindings/core/v8/ActiveScriptWrappable.cpp
index 437bf83932da2186d80e05737591d455cae89909..a538410c4a7ba98758ae41eba34fc7a2e10a4d46 100644
--- a/third_party/WebKit/Source/bindings/core/v8/ActiveScriptWrappable.cpp
+++ b/third_party/WebKit/Source/bindings/core/v8/ActiveScriptWrappable.cpp
@@ -4,6 +4,7 @@
 
 #include "bindings/core/v8/ActiveScriptWrappable.h"
 
+#include "bindings/core/v8/ScriptWrappable.h"
 #include "wtf/HashSet.h"
 #include "wtf/ThreadSpecific.h"
 #include "wtf/Threading.h"
@@ -38,4 +39,14 @@ ScriptWrappable* ActiveScriptWrappable::toScriptWrappable() const
     return m_scriptWrappable;
 }
 
+void ActiveScriptWrappable::traceActiveWrappable(ScriptWrappableVisitor* visitor)

[haraken, 2016/04/13 12:26:22]

traceActiveWrappable => traceWrappers ?

(I want to unify the name of the tracing methods for consistency.)

[Marcel Hlopko, 2016/04/14 16:39:08]

Done.

+{
+    for (auto activeWrappable : activeScriptWrappables()) {
+        if (!activeWrappable->hasPendingActivity())
+            continue;
+
+        visitor->trace(activeWrappable->toScriptWrappable());
+    }
+}
+
 } // namespace blink