GuestView: Move lifetime management out of content

content/browser/browser_plugin/browser_plugin_guest.h

Index: content/browser/browser_plugin/browser_plugin_guest.h
diff --git a/content/browser/browser_plugin/browser_plugin_guest.h b/content/browser/browser_plugin/browser_plugin_guest.h
index cecca6de166bdef20bd3fb02d0282830af6e9146..66234b1f72b9b91a78e47c71aab9b9081c2cc3a3 100644
--- a/content/browser/browser_plugin/browser_plugin_guest.h
+++ b/content/browser/browser_plugin/browser_plugin_guest.h
@@ -114,10 +114,6 @@ class CONTENT_EXPORT BrowserPluginGuest : public WebContentsObserver {
   // Called when the embedder WebContents changes visibility.
   void EmbedderVisibilityChanged(bool visible);
 
-  // Destroys the guest WebContents and all its associated state, including
-  // this BrowserPluginGuest, and its new unattached windows.
-  void Destroy();
-
   // Creates a new guest WebContentsImpl with the provided |params| with |this|
   // as the |opener|.
   WebContentsImpl* CreateNewGuestWindow(
@@ -253,7 +249,6 @@ class CONTENT_EXPORT BrowserPluginGuest : public WebContentsObserver {
                    bool last_unlocked_by_target,
                    bool privileged);
   void OnLockMouseAck(int instance_id, bool succeeded);
-  void OnPluginDestroyed(int instance_id);
   // Resizes the guest's web contents.
   void OnResizeGuest(
       int instance_id, const BrowserPluginHostMsg_ResizeGuest_Params& params);
@@ -365,6 +360,8 @@ class CONTENT_EXPORT BrowserPluginGuest : public WebContentsObserver {
   ui::TextInputMode last_input_mode_;
   bool last_can_compose_inline_;
 
+  int guest_proxy_routing_id_;
+
   // This is a queue of messages that are destined to be sent to the embedder
   // once the guest is attached to a particular embedder.
   std::deque<linked_ptr<IPC::Message> > pending_messages_;