Add HandleScopes to V8DOMActivityLogger's methods

Source/bindings/core/v8/V8DOMActivityLogger.cpp

Index: Source/bindings/core/v8/V8DOMActivityLogger.cpp
diff --git a/Source/bindings/core/v8/V8DOMActivityLogger.cpp b/Source/bindings/core/v8/V8DOMActivityLogger.cpp
index f7456c2fdc60488cd19dbc1651f92d619cffbae9..f393aae17efbff9066c04c7812de7a71217b853c 100644
--- a/Source/bindings/core/v8/V8DOMActivityLogger.cpp
+++ b/Source/bindings/core/v8/V8DOMActivityLogger.cpp
@@ -75,6 +75,7 @@ V8DOMActivityLogger* V8DOMActivityLogger::currentActivityLogger()
     if (!isolate->InContext())
         return 0;
 
+    v8::HandleScope handleScope(isolate);
     v8::Handle<v8::Context> context = isolate->GetCurrentContext();
     if (context.IsEmpty() || !toDOMWindow(context))
         return 0;
@@ -92,6 +93,7 @@ V8DOMActivityLogger* V8DOMActivityLogger::currentActivityLoggerIfIsolatedWorld()
     if (!isolate->InContext())
         return 0;
 
+    v8::HandleScope handleScope(isolate);
     v8::Handle<v8::Context> context = isolate->GetCurrentContext();
     if (context.IsEmpty() || !toDOMWindow(context))
         return 0;