Ignore certain messages in plugin broker process if they are not sent by the

content/ppapi_plugin/broker_process_dispatcher.h

Index: content/ppapi_plugin/broker_process_dispatcher.h
diff --git a/content/ppapi_plugin/broker_process_dispatcher.h b/content/ppapi_plugin/broker_process_dispatcher.h
index 9dca6df10b9b790939da71162ec0715223889a13..95401dd02375dd06bbc284807d8705c15d047bb3 100644
--- a/content/ppapi_plugin/broker_process_dispatcher.h
+++ b/content/ppapi_plugin/broker_process_dispatcher.h
@@ -24,7 +24,8 @@ class BrokerProcessDispatcher
       public base::SupportsWeakPtr<BrokerProcessDispatcher> {
  public:
   BrokerProcessDispatcher(PP_GetInterface_Func get_plugin_interface,
-                          PP_ConnectInstance_Func connect_instance);
+                          PP_ConnectInstance_Func connect_instance,
+                          bool peer_is_browser);
   ~BrokerProcessDispatcher() override;
 
   // IPC::Listener overrides.
@@ -88,6 +89,8 @@ class BrokerProcessDispatcher
   const PPP_Flash_BrowserOperations_1_2* flash_browser_operations_1_2_;
   const PPP_Flash_BrowserOperations_1_0* flash_browser_operations_1_0_;
 
+  bool peer_is_browser_;
+
   DISALLOW_COPY_AND_ASSIGN(BrokerProcessDispatcher);
 };