Browser Plugin: Allocate Instance IDs in BrowserPluginEmbedder instead of BrowserPluginManager

content/browser/browser_plugin/browser_plugin_embedder.h

Index: content/browser/browser_plugin/browser_plugin_embedder.h
diff --git a/content/browser/browser_plugin/browser_plugin_embedder.h b/content/browser/browser_plugin/browser_plugin_embedder.h
index b91837032e24af95b50519a54b3c485a417eaa70..7f5db4e9254dd2d7637ce870fccfaed4be0057ec 100644
--- a/content/browser/browser_plugin/browser_plugin_embedder.h
+++ b/content/browser/browser_plugin/browser_plugin_embedder.h
@@ -118,6 +118,7 @@ class CONTENT_EXPORT BrowserPluginEmbedder : public WebContentsObserver,
 
   // Message handlers.
 
+  void OnAllocateInstanceID(int request_id);
   void OnCreateGuest(int instance_id,
                      const BrowserPluginHostMsg_CreateGuest_Params& params);
   void OnPluginAtPositionResponse(int instance_id,
@@ -148,6 +149,7 @@ class CONTENT_EXPORT BrowserPluginEmbedder : public WebContentsObserver,
   GetRenderViewHostCallbackMap pending_get_render_view_callbacks_;
   // Next request id for BrowserPluginMsg_PluginAtPositionRequest query.
   int next_get_render_view_request_id_;
+  int next_instance_id_;
 
   DISALLOW_COPY_AND_ASSIGN(BrowserPluginEmbedder);
 };