Add support for mapping node tree on the client.

mojo/services/public/cpp/view_manager/lib/view_manager_synchronizer.h

Index: mojo/services/public/cpp/view_manager/lib/view_manager_synchronizer.h
diff --git a/mojo/services/public/cpp/view_manager/lib/view_manager_synchronizer.h b/mojo/services/public/cpp/view_manager/lib/view_manager_synchronizer.h
index 54da43087afc9441ceb650dc7de32b7f45348b37..e3b658a0620fb43e08a482315b35d65c1e12a11f 100644
--- a/mojo/services/public/cpp/view_manager/lib/view_manager_synchronizer.h
+++ b/mojo/services/public/cpp/view_manager/lib/view_manager_synchronizer.h
@@ -8,6 +8,7 @@
 #include "base/basictypes.h"
 #include "base/memory/scoped_vector.h"
 #include "mojo/public/cpp/bindings/remote_ptr.h"
+#include "mojo/services/public/cpp/view_manager/view_manager_types.h"
 #include "mojo/services/public/interfaces/view_manager/view_manager.mojom.h"
 
 namespace mojo {
@@ -23,11 +24,20 @@ class ViewManagerSynchronizer : public IViewManagerClient {
   explicit ViewManagerSynchronizer(ViewManager* view_manager);
   virtual ~ViewManagerSynchronizer();
 
+  bool connected() const { return connected_; }
+
   // API exposed to the node implementation that pushes local changes to the
   // service.
   uint16_t CreateViewTreeNode();
-  void AddChild(uint16_t child_id, uint16_t parent_id);
-  void RemoveChild(uint16_t child_id, uint16_t parent_id);
+  void DestroyViewTreeNode(TransportNodeId node_id);
+
+  // These methods take TransportIds. For views owned by the current connection,
+  // the connection id high word can be zero. In all cases, the TransportId 0x1
+  // refers to the root node.
+  void AddChild(TransportNodeId child_id, TransportNodeId parent_id);
+  void RemoveChild(TransportNodeId child_id, TransportNodeId parent_id);
+
+  void BuildNodeTree(const Callback<void()>& callback);
 
  private:
   friend class ViewManagerTransaction;
@@ -39,10 +49,10 @@ class ViewManagerSynchronizer : public IViewManagerClient {
                                       uint32 new_parent,
                                       uint32 old_parent,
                                       uint32 change_id) OVERRIDE;
-  virtual void OnNodeViewReplaced(uint32_t node,
-                                  uint32_t new_view_id,
-                                  uint32_t old_view_id,
-                                  uint32_t change_id) OVERRIDE;
+  virtual void OnNodeViewReplaced(uint32_t node,
+                                  uint32_t new_view_id,
+                                  uint32_t old_view_id,
+                                  uint32_t change_id) OVERRIDE;
 
   // Called to schedule a sync of the client model with the service after a
   // return to the message loop.
@@ -58,10 +68,18 @@ class ViewManagerSynchronizer : public IViewManagerClient {
   //             the queue?
   uint32_t GetNextChangeId();
 
+  // Called from transactions to notify when a commit is made to the service and
+  // when a response is received.
+  void NotifyCommit();
+  void NotifyCommitResponse(bool success);
+
   // Removes |transaction| from the pending queue. |transaction| must be at the
   // front of the queue.
   void RemoveFromPendingQueue(ViewManagerTransaction* transaction);
 
+  void OnTreeReceived(const Callback<void()>& callback,
+                      const Array<INode>& data);
+
   ViewManager* view_manager_;
   bool connected_;
   uint16_t connection_id_;