Introduce all the plumbing for Session Storage. This mostly consists of crea...

chrome/common/render_messages_internal.h

Index: chrome/common/render_messages_internal.h
===================================================================
--- chrome/common/render_messages_internal.h	(revision 36257)
+++ chrome/common/render_messages_internal.h	(working copy)
@@ -72,11 +72,8 @@
   // Tells the renderer to create a new view.
   // This message is slightly different, the view it takes is the view to
   // create, the message itself is sent as a non-view control message.
-  IPC_MESSAGE_CONTROL4(ViewMsg_New,
-                       gfx::NativeViewId, /* parent window */
-                       RendererPreferences,
-                       WebPreferences,
-                       int32 /* view id */)
+  IPC_MESSAGE_CONTROL1(ViewMsg_New,
+                       ViewMsg_New_Params)
 
   // Tells the renderer to set its maximum cache size to the supplied value
   IPC_MESSAGE_CONTROL3(ViewMsg_SetCacheCapacities,
@@ -845,10 +842,12 @@
   // Sent by the renderer when it is creating a new window.  The browser creates
   // a tab for it and responds with a ViewMsg_CreatingNew_ACK.  If route_id is
   // MSG_ROUTING_NONE, the view couldn't be created.
-  IPC_SYNC_MESSAGE_CONTROL2_1(ViewHostMsg_CreateWindow,
+  IPC_SYNC_MESSAGE_CONTROL3_2(ViewHostMsg_CreateWindow,
                               int /* opener_id */,
                               bool /* user_gesture */,
-                              int /* route_id */)
+                              int64 /* session_storage_namespace_id */,
+                              int /* route_id */,
+                              int64 /* cloned_session_storage_namespace_id */)
 
   // Similar to ViewHostMsg_CreateWindow, except used for sub-widgets, like
   // <select> dropdowns.  This message is sent to the TabContents that
@@ -1839,17 +1838,6 @@
   IPC_MESSAGE_CONTROL1(ViewHostMsg_SetCacheMode,
                        bool /* enabled */)
 
-  // There's one LocalStorage namespace per profile and one SessionStorage
-  // namespace per tab.  This will find or create the proper namespace.
-  IPC_SYNC_MESSAGE_CONTROL1_1(ViewHostMsg_DOMStorageNamespaceId,
-                              DOMStorageType /* storage_type */,
-                              int64 /* new_namespace_id */)
-
-  // Used by SessionStorage to clone a namespace per the spec.
-  IPC_SYNC_MESSAGE_CONTROL1_1(ViewHostMsg_DOMStorageCloneNamespaceId,
-                              int64 /* namespace_id to clone */,
-                              int64 /* new_namespace_id */)
-
   // Get the storage area id for a particular origin within a namespace.
   IPC_SYNC_MESSAGE_CONTROL2_1(ViewHostMsg_DOMStorageStorageAreaId,
                               int64 /* namespace_id */,