Require WebLocalFrame to be created with a non-null client

third_party/WebKit/Source/web/FrameLoaderClientImpl.cpp

Index: third_party/WebKit/Source/web/FrameLoaderClientImpl.cpp
diff --git a/third_party/WebKit/Source/web/FrameLoaderClientImpl.cpp b/third_party/WebKit/Source/web/FrameLoaderClientImpl.cpp
index a0684f80b7e06f7374b48af6c614da0578e5e1e5..3d4abe9aa49f85fafdd94633bd84ea83ebe1c888 100644
--- a/third_party/WebKit/Source/web/FrameLoaderClientImpl.cpp
+++ b/third_party/WebKit/Source/web/FrameLoaderClientImpl.cpp
@@ -435,10 +435,10 @@ void FrameLoaderClientImpl::dispatchDidNavigateWithinPage(HistoryItem* item, His
         m_webFrame->client()->didNavigateWithinPage(m_webFrame, WebHistoryItem(item), static_cast<WebHistoryCommitType>(commitType), contentInitiated);
 }
 
-void FrameLoaderClientImpl::dispatchWillClose()
+void FrameLoaderClientImpl::dispatchWillCommitProvisionalLoad()
 {
     if (m_webFrame->client())
-        m_webFrame->client()->willClose(m_webFrame);
+        m_webFrame->client()->willCommitProvisionalLoad(m_webFrame);
 }
 
 void FrameLoaderClientImpl::dispatchDidStartProvisionalLoad(double triggeringEventTime)