Implement frame attribution (FrameBlamer)

third_party/WebKit/Source/bindings/core/v8/V8PerIsolateData.cpp

Index: third_party/WebKit/Source/bindings/core/v8/V8PerIsolateData.cpp
diff --git a/third_party/WebKit/Source/bindings/core/v8/V8PerIsolateData.cpp b/third_party/WebKit/Source/bindings/core/v8/V8PerIsolateData.cpp
index 7baff2fe98124552efbb5b6bb6ed8c9a2e6a1af7..3212d3cb827e2f1e916e93b626538f285694006b 100644
--- a/third_party/WebKit/Source/bindings/core/v8/V8PerIsolateData.cpp
+++ b/third_party/WebKit/Source/bindings/core/v8/V8PerIsolateData.cpp
@@ -35,6 +35,7 @@
 #include "core/frame/Deprecation.h"
 #include "core/inspector/MainThreadDebugger.h"
 #include "platform/ScriptForbiddenScope.h"
+#include "platform/TraceEvent.h"
 #include "public/platform/Platform.h"
 #include "wtf/LeakAnnotations.h"
 #include "wtf/MainThread.h"
@@ -351,4 +352,13 @@ ThreadDebugger* V8PerIsolateData::threadDebugger()
     return m_threadDebugger.get();
 }
 
+void V8PerIsolateData::onTraceLogEnabled()
+{
+    TRACE_EVENT_OBJECT_SNAPSHOT_WITH_ID("v8", "Isolate", isolate(), "{}");
+}
+
+void V8PerIsolateData::onTraceLogDisabled()
+{
+}
+
 } // namespace blink