Add support for external out-of-process PPAPI plugins in the browser.

content/public/browser/content_browser_client.h

Index: content/public/browser/content_browser_client.h
===================================================================
--- content/public/browser/content_browser_client.h	(revision 166155)
+++ content/public/browser/content_browser_client.h	(working copy)
@@ -436,11 +436,26 @@
   // else we should do with the file.
   virtual std::string GetDefaultDownloadName();
 
-  // Notifification that a pepper plugin has just been spawned. This allows the
+  // Notification that a pepper plugin has just been spawned. This allows the
   // embedder to add filters onto the host to implement interfaces.
   // This is called on the IO thread.
   virtual void DidCreatePpapiPlugin(BrowserPpapiHost* browser_host) {}
 
+  // Gets the host for an external out-of-process plugin.
+  virtual content::BrowserPpapiHost* GetExternalBrowserPpapiHost(
+      int plugin_child_id);
+
+  // Notification that an instance has just been created for an external out of
+  // process pepper plugin (e.g. a NaCl plugin). Called on the IO thread.
+  virtual void DidCreatePpapiInstance(int plugin_child_id,

[brettw, 2012/11/07 00:18:11]

I'm not sure these are used? Are they from a previous patch?

[bbudge, 2012/11/07 00:51:46]

Yep. Thanks.

+                                      int32 pp_instance,
+                                      int render_process_id,
+                                      int render_view_id) {}
+  // Notification that an instance has just been deleted for an external out of
+  // process pepper plugin (e.g. a NaCl plugin). Called on the IO thread.
+  virtual void DidDeletePpapiInstance(int plugin_child_id,
+                                      int32 pp_instance) {}
+
   // Returns true if renderer processes can use Pepper TCP/UDP sockets from
   // the given origin and connection type.
   virtual bool AllowPepperSocketAPI(BrowserContext* browser_context,