Ensure that PP_Instance values are unique within a plugin process in addition...

chrome/common/pepper_plugin_registry.cc

Index: chrome/common/pepper_plugin_registry.cc
===================================================================
--- chrome/common/pepper_plugin_registry.cc	(revision 77663)
+++ chrome/common/pepper_plugin_registry.cc	(working copy)
@@ -13,6 +13,7 @@
 #include "base/utf_string_conversions.h"
 #include "chrome/common/chrome_paths.h"
 #include "chrome/common/chrome_switches.h"
+#include "content/common/child_process.h"
 #include "content/common/content_switches.h"
 #include "remoting/client/plugin/pepper_entrypoints.h"
 
@@ -326,3 +327,19 @@
     preloaded_modules_[current.path] = module;
   }
 }
+
+MessageLoop* PepperPluginRegistry::GetIPCMessageLoop() {
+  // This is called only in the renderer so we know we have a child process.
+  DCHECK(ChildProcess::current()) << "Must be in the renderer.";
+  return ChildProcess::current()->io_message_loop();
+}
+
+base::WaitableEvent* PepperPluginRegistry::GetShutdownEvent() {
+  DCHECK(ChildProcess::current()) << "Must be in the renderer.";
+  return ChildProcess::current()->GetShutDownEvent();
+}
+
+std::set<PP_Instance>* PepperPluginRegistry::GetGloballySeenInstanceIDSet() {
+  // This function is not needed on the host side of the proxy.
+  return NULL;
+}