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

chrome/browser/nacl_host/nacl_process_host.h

Index: chrome/browser/nacl_host/nacl_process_host.h
===================================================================
--- chrome/browser/nacl_host/nacl_process_host.h	(revision 166155)
+++ chrome/browser/nacl_host/nacl_process_host.h	(working copy)
@@ -15,6 +15,7 @@
 #include "base/process.h"
 #include "chrome/common/nacl_types.h"
 #include "content/public/browser/browser_child_process_host_delegate.h"
+#include "content/public/browser/browser_child_process_host_iterator.h"
 #include "googleurl/src/gurl.h"
 #include "ipc/ipc_channel_handle.h"
 #include "net/base/tcp_listen_socket.h"
@@ -26,6 +27,7 @@
 
 namespace content {
 class BrowserChildProcessHost;
+class BrowserPpapiHost;
 }
 
 namespace IPC {
@@ -70,6 +72,9 @@
 
   bool Send(IPC::Message* msg);
 
+  content::BrowserChildProcessHost* process() { return process_.get(); }
+  content::BrowserPpapiHost* browser_ppapi_host() { return ppapi_host_.get(); }
+
  private:
   friend class PluginListener;
 
@@ -198,10 +203,20 @@
   scoped_ptr<IPC::ChannelProxy> ipc_proxy_channel_;
   // Plugin listener, to forward browser channel messages to us.
   PluginListener ipc_plugin_listener_;
+  // Browser host for plugin process.
+  scoped_ptr<content::BrowserPpapiHost> ppapi_host_;
 
   int render_view_id_;
 
   DISALLOW_COPY_AND_ASSIGN(NaClProcessHost);
 };
 
+class NaClProcessHostIterator
+    : public content::BrowserChildProcessHostTypeIterator<NaClProcessHost> {
+ public:
+  NaClProcessHostIterator()
+      : content::BrowserChildProcessHostTypeIterator<NaClProcessHost>(
+            content::PROCESS_TYPE_NACL_LOADER) {}
+};
+
 #endif  // CHROME_BROWSER_NACL_HOST_NACL_PROCESS_HOST_H_