Simplify starting a same-document navigation

Source/core/loader/DocumentLoader.cpp

 /*
  * Copyright (C) 2006, 2007, 2008 Apple Inc. All rights reserved.
  * Copyright (C) 2011 Google Inc. All rights reserved.
  *
  * Redistribution and use in source and binary forms, with or without
  * modification, are permitted provided that the following conditions
  * are met:
  *
  * 1.  Redistributions of source code must retain the above copyright
  *     notice, this list of conditions and the following disclaimer.
@@ skipping 284 matching lines @@
 bool DocumentLoader::isRedirectAfterPost(const ResourceRequest& newRequest, const ResourceResponse& redirectResponse)
 {
     int status = redirectResponse.httpStatusCode();
     if (((status >= 301 && status <= 303) || status == 307)
         && m_originalRequest.httpMethod() == "POST")
         return true;
 
     return false;
 }
 
-bool DocumentLoader::shouldContinueForNavigationPolicy(const ResourceRequest& request, PolicyCheckLoadType policyCheckLoadType)
+bool DocumentLoader::shouldContinueForNavigationPolicy(const ResourceRequest& request)
 {
     // Don't ask if we are loading an empty URL.
     if (request.url().isEmpty() || m_substituteData.isValid())
         return true;
 
     // If we're loading content into a subframe, check against the parent's Content Security Policy
     // and kill the load if that check fails.
     if (m_frame->ownerElement() && !m_frame->ownerElement()->document().contentSecurityPolicy()->allowChildFrameFromSource(request.url()))
         return false;
 
     NavigationPolicy policy = m_triggeringAction.policy();
-    if (policyCheckLoadType != PolicyCheckFragment)
-        policy = frameLoader()->client()->decidePolicyForNavigation(request, this, policy);
+    policy = frameLoader()->client()->decidePolicyForNavigation(request, this, policy);
     if (policy == NavigationPolicyCurrentTab)
         return true;
     if (policy == NavigationPolicyIgnore)
         return false;
     if (!DOMWindow::allowPopUp(m_frame) && !UserGestureIndicator::processingUserGesture())
         return false;
     frameLoader()->client()->loadURLExternally(request, policy);
     return false;
 }
 
@@ skipping 58 matching lines @@
         }
     }
 
     m_request = newRequest;
 
     if (redirectResponse.isNull())
         return;
 
     appendRedirect(newRequest.url());
     frameLoader()->client()->dispatchDidReceiveServerRedirectForProvisionalLoad();
-    if (!shouldContinueForNavigationPolicy(newRequest, PolicyCheckStandard))
+    if (!shouldContinueForNavigationPolicy(newRequest))
         cancelMainResourceLoad(ResourceError::cancelledError(m_request.url()));
 }
 
 static bool canShowMIMEType(const String& mimeType, Page* page)
 {
     if (blink::Platform::current()->mimeRegistry()->supportsMIMEType(mimeType) == blink::WebMimeRegistry::IsSupported)
         return true;
     PluginData* pluginData = page->pluginData();
     return !mimeType.isEmpty() && pluginData && pluginData->supportsMimeType(mimeType);
 }
@@ skipping 456 matching lines @@
 void DocumentLoader::replaceDocument(const String& source, Document* ownerDocument)
 {
     m_frame->loader().stopAllLoaders();
     m_writer = createWriterFor(m_frame, ownerDocument, m_frame->document()->url(), mimeType(), m_writer ? m_writer->encoding() : emptyAtom,  m_writer ? m_writer->encodingWasChosenByUser() : false, true);
     if (!source.isNull())
         m_writer->appendReplacingData(source);
     endWriting(m_writer.get());
 }
 
 } // namespace WebCore