(DEPRECATED) Send navigation_start to browser process in DidStartProvisionalLoad

third_party/WebKit/Source/core/loader/DocumentLoader.cpp

Index: third_party/WebKit/Source/core/loader/DocumentLoader.cpp
diff --git a/third_party/WebKit/Source/core/loader/DocumentLoader.cpp b/third_party/WebKit/Source/core/loader/DocumentLoader.cpp
index a5fbff08840890bf4dc2d07a7eda4cec63239fff..d678ee40c02380f8d4e9f402947cb6e0b77491e4 100644
--- a/third_party/WebKit/Source/core/loader/DocumentLoader.cpp
+++ b/third_party/WebKit/Source/core/loader/DocumentLoader.cpp
@@ -731,7 +731,8 @@ void DocumentLoader::startLoadingMainResource()
 {
     RefPtrWillBeRawPtr<DocumentLoader> protect(this);
     m_mainDocumentError = ResourceError();
-    timing().markNavigationStart();
+    if (!timing().navigationStart())
+        timing().markNavigationStart();
     ASSERT(!m_mainResource);
     ASSERT(m_state == NotStarted);
     m_state = Provisional;