Move SessionStorageNamespace entirely into NavigationController and support StoragePartitions.

content/browser/web_contents/interstitial_page_impl.cc

Index: content/browser/web_contents/interstitial_page_impl.cc
diff --git a/content/browser/web_contents/interstitial_page_impl.cc b/content/browser/web_contents/interstitial_page_impl.cc
index 32493badc9ec3f89df8e9fd2c008e575424567c2..1d53cb196e558f5bceea55a985e3e961b9423516 100644
--- a/content/browser/web_contents/interstitial_page_impl.cc
+++ b/content/browser/web_contents/interstitial_page_impl.cc
@@ -12,6 +12,8 @@
 #include "base/string_util.h"
 #include "base/threading/thread.h"
 #include "base/utf_string_conversions.h"
+#include "content/browser/dom_storage/dom_storage_context_impl.h"
+#include "content/browser/dom_storage/session_storage_namespace_impl.h"
 #include "content/browser/renderer_host/render_process_host_impl.h"
 #include "content/browser/renderer_host/render_view_host_impl.h"
 #include "content/browser/renderer_host/resource_dispatcher_host_impl.h"
@@ -22,7 +24,9 @@
 #include "content/common/view_messages.h"
 #include "content/port/browser/render_view_host_delegate_view.h"
 #include "content/port/browser/render_widget_host_view_port.h"
+#include "content/public/browser/browser_context.h"
 #include "content/public/browser/browser_thread.h"
+#include "content/public/browser/content_browser_client.h"
 #include "content/public/browser/dom_operation_notification_details.h"
 #include "content/public/browser/interstitial_page_delegate.h"
 #include "content/public/browser/invalidate_type.h"
@@ -227,7 +231,7 @@ void InterstitialPageImpl::Show() {
     // Give delegates a chance to set some states on the navigation entry.
     delegate_->OverrideEntry(entry);
 
-    web_contents_->GetControllerImpl().AddTransientEntry(entry);
+    web_contents_->GetController().AddTransientEntry(entry);
   }
 
   DCHECK(!render_view_host_);
@@ -477,9 +481,26 @@ WebContents* InterstitialPageImpl::web_contents() const {
 }
 
 RenderViewHost* InterstitialPageImpl::CreateRenderViewHost() {
+  // Interstitial pages don't want to share the session storage so we mint a
+  // new one.
+  using content::BrowserContext;
+  BrowserContext* browser_context = web_contents()->GetBrowserContext();
+  scoped_refptr<SiteInstance> site_instance =
+      SiteInstance::Create(browser_context);
+  const std::string& partition_id =
+      content::GetContentClient()->browser()->
+          GetStoragePartitionIdForSiteInstance(browser_context,
+                                               site_instance);
+  DOMStorageContextImpl* dom_storage_context =
+      static_cast<DOMStorageContextImpl*>(
+          BrowserContext::GetDOMStorageContextByPartitionId(browser_context,
+                                                            partition_id));
+  SessionStorageNamespaceImpl* session_storage_namespace_impl =
+      new SessionStorageNamespaceImpl(dom_storage_context);
+
   RenderViewHostImpl* render_view_host = new RenderViewHostImpl(
-      SiteInstance::Create(web_contents()->GetBrowserContext()), this, this,
-      MSG_ROUTING_NONE, false, NULL);
+      site_instance, this, this, MSG_ROUTING_NONE, false,
+      session_storage_namespace_impl);
   web_contents_->RenderViewForInterstitialPageCreated(render_view_host);
   return render_view_host;
 }