Fix SessionStorage confusion between RenderViewHostImpl and NavigationController.

content/browser/web_contents/web_contents_impl.cc

 // Copyright (c) 2012 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #include "content/browser/web_contents/web_contents_impl.h"
 
 #include <utility>
 
 #include "base/command_line.h"
 #include "base/debug/trace_event.h"
@@ skipping 1686 matching lines @@
 
 void WebContentsImpl::RequestMediaAccessPermission(
     const MediaStreamRequest& request,
     const MediaResponseCallback& callback) {
   if (delegate_)
     delegate_->RequestMediaAccessPermission(this, request, callback);
   else
     callback.Run(MediaStreamDevices(), scoped_ptr<MediaStreamUI>());
 }
 
+SessionStorageNamespace* WebContentsImpl::GetSessionStorageNamespace(
+    SiteInstance* instance) {
+  return controller_.GetSessionStorageNamespace(instance);
+}
+
 void WebContentsImpl::DidSendScreenRects(RenderWidgetHostImpl* rwh) {
   if (browser_plugin_embedder_)
     browser_plugin_embedder_->DidSendScreenRects();
 }
 
 void WebContentsImpl::UpdatePreferredSize(const gfx::Size& pref_size) {
   preferred_size_ = pref_size;
   if (delegate_)
     delegate_->UpdatePreferredSize(this, pref_size);
 }
@@ skipping 2004 matching lines @@
 }
 
 void WebContentsImpl::ClearAllPowerSaveBlockers() {
   for (PowerSaveBlockerMap::iterator i(power_save_blockers_.begin());
        i != power_save_blockers_.end(); ++i)
     STLDeleteValues(&power_save_blockers_[i->first]);
   power_save_blockers_.clear();
 }
 
 }  // namespace content