Support partitioning of storage contexts based on render_id.

content/browser/web_contents/navigation_controller_impl.cc

Index: content/browser/web_contents/navigation_controller_impl.cc
diff --git a/content/browser/web_contents/navigation_controller_impl.cc b/content/browser/web_contents/navigation_controller_impl.cc
index d985605c1f10837ae5dc942b706120ab7ee4964c..c7aaef044a9a8f48c079c9c2fc2f5c600fa057ac 100644
--- a/content/browser/web_contents/navigation_controller_impl.cc
+++ b/content/browser/web_contents/navigation_controller_impl.cc
@@ -194,7 +194,7 @@ NavigationControllerImpl::NavigationControllerImpl(
   if (!session_storage_namespace_) {

[Charlie Reis, 2012/07/02 23:21:23]

Did you decide that having this on the NavigationController is ok, even though
we can navigate from one namespace to another?

[awong, 2012/07/09 20:37:43]

No...this isn't okay.  But I'm going to fix it in another CL. This one has been
pending too long.

     session_storage_namespace_ = new SessionStorageNamespaceImpl(
         static_cast<DOMStorageContextImpl*>(
-            BrowserContext::GetDOMStorageContext(browser_context_)));
+            BrowserContext::GetDefaultDOMStorageContext(browser_context)));

[nasko, 2012/06/29 23:08:56]

Any particular reason you moved from browser_context_ to browser_context?

[awong, 2012/07/09 20:37:43]

nope. Moved back.

   }
 }