[Extensions] Kill off ExtensionMsg_AddMessageToConsole

extensions/renderer/dispatcher.cc

Index: extensions/renderer/dispatcher.cc
diff --git a/extensions/renderer/dispatcher.cc b/extensions/renderer/dispatcher.cc
index 687509d6e9af883d00b4d3976c8dc1d5d0258ac7..36bc1a46fa610a2c6fbf6b26039fccb29951b968 100644
--- a/extensions/renderer/dispatcher.cc
+++ b/extensions/renderer/dispatcher.cc
@@ -120,6 +120,9 @@ static const char kEventDispatchFunction[] = "dispatchEvent";
 static const char kOnSuspendEvent[] = "runtime.onSuspend";
 static const char kOnSuspendCanceledEvent[] = "runtime.onSuspendCanceled";
 
+// There is only ever one instance of the Dispatcher.
+Dispatcher* g_dispatcher = nullptr;
+
 // Returns the global value for "chrome" from |context|. If one doesn't exist
 // creates a new object for it.
 //
@@ -190,6 +193,8 @@ Dispatcher::Dispatcher(DispatcherDelegate* delegate)
       is_webkit_initialized_(false),
       user_script_set_manager_observer_(this),
       webrequest_used_(false) {
+  DCHECK(!g_dispatcher);
+  g_dispatcher = this;
   const base::CommandLine& command_line =
       *(base::CommandLine::ForCurrentProcess());
   set_idle_notifications_ =
@@ -214,6 +219,11 @@ Dispatcher::Dispatcher(DispatcherDelegate* delegate)
 }
 
 Dispatcher::~Dispatcher() {
+  g_dispatcher = nullptr;
+}
+
+Dispatcher* Dispatcher::Get() {
+  return g_dispatcher;
 }
 
 void Dispatcher::OnRenderFrameCreated(content::RenderFrame* render_frame) {