Instrumentations to trace Swarm startup.

Source/WebCore/bindings/dart/DartIsolateState.cpp

Index: Source/WebCore/bindings/dart/DartIsolateState.cpp
diff --git a/Source/WebCore/bindings/dart/DartIsolateState.cpp b/Source/WebCore/bindings/dart/DartIsolateState.cpp
index 9445e22dec4b53f49af7dde7dcf77cd4e465bdbd..5608422db2283f883c333d018298748a9a7c4610 100644
--- a/Source/WebCore/bindings/dart/DartIsolateState.cpp
+++ b/Source/WebCore/bindings/dart/DartIsolateState.cpp
@@ -33,6 +33,7 @@
 #include "DartController.h"
 #include "DartDOMWrapper.h"
 #include "DartUtilities.h"
+#include "InspectorInstrumentation.h"
 
 namespace WebCore {
 
@@ -58,9 +59,27 @@ void DartIsolateState::popLink()
     m_current = previous;
 }
 
+class Timeline {
+public:
+    Timeline(Frame* frame, String tag)
+    {
+        m_cookie = InspectorInstrumentation::willEvaluateScript(frame, tag, 0);
+    }
+
+    ~Timeline()
+    {
+        InspectorInstrumentation::didEvaluateScript(m_cookie);
+    }
+
+private:
+    InspectorInstrumentationCookie m_cookie;
+};
+
+
 // Creates a new isolates and sets it as the current.
 Dart_Isolate DartIsolateState::create(ScriptExecutionContext* context, void* data)
 {
+    Frame* f = static_cast<Document*>(context)->frame();
     if (m_current) {
         ASSERT(m_current->isolate && m_current->isolate == Dart_CurrentIsolate());
         Dart_ExitIsolate();
@@ -68,7 +87,11 @@ Dart_Isolate DartIsolateState::create(ScriptExecutionContext* context, void* dat
     // FIXME: proper error reporting.
     char* errorMsg = 0;
     ASSERT(data);
-    Dart_Isolate isolate = Dart_CreateIsolate(DartUtilities::fullSnapshot(), data, &errorMsg);
+    Dart_Isolate isolate;
+    {
+    Timeline t0(f, "Dart_CreateIsolate");
+    isolate = Dart_CreateIsolate(DartUtilities::fullSnapshot(), data, &errorMsg);
+    }
     pushLink(isolate);
     ASSERT(Dart_CurrentIsolate() == isolate);
     DartController::setupDOMEnabledIsolate(context);