Additional context creation tracing

third_party/WebKit/Source/web/WebLocalFrameImpl.cpp

Index: third_party/WebKit/Source/web/WebLocalFrameImpl.cpp
diff --git a/third_party/WebKit/Source/web/WebLocalFrameImpl.cpp b/third_party/WebKit/Source/web/WebLocalFrameImpl.cpp
index c8a165a11f023e7524e4feb07a2fa2513e0b9249..92ed22cce67b76761a1c4d5dea4d526a1e94f3e7 100644
--- a/third_party/WebKit/Source/web/WebLocalFrameImpl.cpp
+++ b/third_party/WebKit/Source/web/WebLocalFrameImpl.cpp
@@ -1521,7 +1521,11 @@ LocalFrame* WebLocalFrameImpl::createChildFrame(const FrameLoadRequest& request,
     // which can identify the element.
     AtomicString uniqueName = frame()->tree().calculateUniqueNameForNewChildFrame(
         name, ownerElement->getAttribute(ownerElement->subResourceAttributeName()));
-    WebLocalFrameImpl* webframeChild = toWebLocalFrameImpl(m_client->createChildFrame(this, scope, name, uniqueName, static_cast<WebSandboxFlags>(ownerElement->getSandboxFlags()), ownerProperties));
+    WebLocalFrameImpl* webframeChild;
+    {
+        TRACE_EVENT0("blink", "WebLocalFrameImpl::createChildframe sync IPC");
+        webframeChild = toWebLocalFrameImpl(m_client->createChildFrame(this, scope, name, uniqueName, static_cast<WebSandboxFlags>(ownerElement->getSandboxFlags()), ownerProperties));
+    }
     if (!webframeChild)
         return nullptr;