Reland of DocumentLoader should commit the load before creating a DocumentWriter

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

Index: third_party/WebKit/Source/core/loader/FrameLoader.cpp
diff --git a/third_party/WebKit/Source/core/loader/FrameLoader.cpp b/third_party/WebKit/Source/core/loader/FrameLoader.cpp
index b165a2e788363496aed321df4557f0904602bf14..ccbee6fabbbe59bbb494caf7ef1bd0d28bb09e47 100644
--- a/third_party/WebKit/Source/core/loader/FrameLoader.cpp
+++ b/third_party/WebKit/Source/core/loader/FrameLoader.cpp
@@ -435,18 +435,28 @@ void FrameLoader::receivedFirstData()
     dispatchDidClearDocumentOfWindowObject();
 }
 
-void FrameLoader::didBeginDocument(bool dispatch)
+void FrameLoader::didInstallNewDocument(bool dispatchWindowObjectAvailable)
 {
     ASSERT(m_frame);
     ASSERT(m_frame->document());
-    ASSERT(m_frame->document()->fetcher());
+
     m_frame->document()->setReadyState(Document::Loading);
 
-    if (dispatch)
+    if (dispatchWindowObjectAvailable)
         dispatchDidClearDocumentOfWindowObject();
 
     m_frame->document()->initContentSecurityPolicy(m_documentLoader ? m_documentLoader->releaseContentSecurityPolicy() : ContentSecurityPolicy::create());
 
+    if (m_provisionalItem && isBackForwardLoadType(m_loadType))
+        m_frame->document()->setStateForNewFormElements(m_provisionalItem->documentState());
+}
+
+void FrameLoader::didBeginDocument()
+{
+    ASSERT(m_frame);
+    ASSERT(m_frame->document());
+    ASSERT(m_frame->document()->fetcher());
+
     if (m_documentLoader) {
         String suboriginHeader = m_documentLoader->response().httpHeaderField(HTTPNames::Suborigin);
         if (!suboriginHeader.isNull()) {
@@ -482,9 +492,6 @@ void FrameLoader::didBeginDocument(bool dispatch)
         }
     }
 
-    if (m_provisionalItem && isBackForwardLoadType(m_loadType))
-        m_frame->document()->setStateForNewFormElements(m_provisionalItem->documentState());
-
     client()->didCreateNewDocument();
 }