Additional context creation tracing

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

Index: third_party/WebKit/Source/bindings/core/v8/WindowProxy.cpp
diff --git a/third_party/WebKit/Source/bindings/core/v8/WindowProxy.cpp b/third_party/WebKit/Source/bindings/core/v8/WindowProxy.cpp
index c6cb29661fc2cab3797a97d98c6bc06d8cc97012..6c80ae514c38ad42eadb21303bb576a85ed71a9b 100644
--- a/third_party/WebKit/Source/bindings/core/v8/WindowProxy.cpp
+++ b/third_party/WebKit/Source/bindings/core/v8/WindowProxy.cpp
@@ -246,35 +246,43 @@ bool WindowProxy::initialize()
         }
     }
 
-    if (!setupWindowPrototypeChain()) {
-        disposeContext(DoNotDetachGlobal);
-        return false;
+    {
+        TRACE_EVENT0("v8", "WindowProxy::initialize (prototype chain)");
+        if (!setupWindowPrototypeChain()) {
+            disposeContext(DoNotDetachGlobal);
+            return false;
+        }
     }
 
-    SecurityOrigin* origin = 0;
-    if (m_world->isMainWorld()) {
-        // ActivityLogger for main world is updated within updateDocument().
-        updateDocument();
-        origin = m_frame->securityContext()->getSecurityOrigin();
-        // FIXME: Can this be removed when CSP moves to browser?
-        ContentSecurityPolicy* csp = m_frame->securityContext()->contentSecurityPolicy();
-        context->AllowCodeGenerationFromStrings(csp->allowEval(0, ContentSecurityPolicy::SuppressReport));
-        context->SetErrorMessageForCodeGenerationFromStrings(v8String(m_isolate, csp->evalDisabledErrorMessage()));
-    } else {
-        updateActivityLogger();
-        origin = m_world->isolatedWorldSecurityOrigin();
-        setSecurityToken(origin);
-    }
-    if (m_frame->isLocalFrame()) {
-        LocalFrame* frame = toLocalFrame(m_frame);
-        MainThreadDebugger::instance()->contextCreated(m_scriptState.get(), frame, origin);
-        frame->loader().client()->didCreateScriptContext(context, m_world->extensionGroup(), m_world->worldId());
+    {
+        TRACE_EVENT0("v8", "WindowProxy::initialize (misc init)");
+        SecurityOrigin* origin = 0;
+        if (m_world->isMainWorld()) {
+            // ActivityLogger for main world is updated within updateDocument().
+            updateDocument();
+            origin = m_frame->securityContext()->getSecurityOrigin();
+            // FIXME: Can this be removed when CSP moves to browser?
+            ContentSecurityPolicy* csp = m_frame->securityContext()->contentSecurityPolicy();
+            context->AllowCodeGenerationFromStrings(csp->allowEval(0, ContentSecurityPolicy::SuppressReport));
+            context->SetErrorMessageForCodeGenerationFromStrings(v8String(m_isolate, csp->evalDisabledErrorMessage()));
+        } else {
+            updateActivityLogger();
+            origin = m_world->isolatedWorldSecurityOrigin();
+            setSecurityToken(origin);
+        }
+        if (m_frame->isLocalFrame()) {
+            LocalFrame* frame = toLocalFrame(m_frame);
+            MainThreadDebugger::instance()->contextCreated(m_scriptState.get(), frame, origin);
+            TRACE_EVENT0("v8", "WindowProxy::initialize (did create script context)");
+            frame->loader().client()->didCreateScriptContext(context, m_world->extensionGroup(), m_world->worldId());
+        }
     }
     // If Origin Trials have been registered before the V8 context was ready,
     // then inject them into the context now
     if (m_world->isMainWorld()) {
         ExecutionContext* executionContext = m_scriptState->getExecutionContext();
         if (executionContext) {
+            TRACE_EVENT0("v8", "WindowProxy::initialize (origin trial init)");
             OriginTrialContext* originTrialContext = OriginTrialContext::from(executionContext);
             if (originTrialContext)
                 originTrialContext->initializePendingFeatures();
@@ -321,6 +329,7 @@ void WindowProxy::createContext()
 
     v8::Local<v8::Context> context;
     {
+        TRACE_EVENT0("v8", "WindowProxy::createContext");
         V8PerIsolateData::UseCounterDisabledScope useCounterDisabled(V8PerIsolateData::from(m_isolate));
         context = v8::Context::New(m_isolate, &extensionConfiguration, globalTemplate, m_global.newLocal(m_isolate));
     }
@@ -391,6 +400,7 @@ void WindowProxy::updateDocumentWrapper(v8::Local<v8::Object> wrapper)
 
 void WindowProxy::updateDocumentProperty()
 {
+    TRACE_EVENT0("v8", "WindowProxy::updateDocumentProperty");
     if (!m_world->isMainWorld())
         return;
 
@@ -417,6 +427,7 @@ void WindowProxy::updateDocumentProperty()
 
 void WindowProxy::updateActivityLogger()
 {
+    TRACE_EVENT0("v8", "WindowProxy::updateActivityLogger");
     m_scriptState->perContextData()->setActivityLogger(V8DOMActivityLogger::activityLogger(
         m_world->worldId(), m_frame->isLocalFrame() && toLocalFrame(m_frame)->document() ? toLocalFrame(m_frame)->document()->baseURI() : KURL()));
 }
@@ -474,6 +485,7 @@ void WindowProxy::setSecurityToken(SecurityOrigin* origin)
 
 void WindowProxy::updateDocument()
 {
+    TRACE_EVENT0("v8", "WindowProxy::updateDocument");
     ASSERT(m_world->isMainWorld());
     if (!isGlobalInitialized())
         return;
@@ -556,6 +568,7 @@ void WindowProxy::namedItemRemoved(HTMLDocument* document, const AtomicString& n
 
 void WindowProxy::updateSecurityOrigin(SecurityOrigin* origin)
 {
+    TRACE_EVENT0("v8", "WindowProxy::updateSecurityOrigin");
     if (!isContextInitialized())
         return;
     setSecurityToken(origin);