Fix bug where transient pages would miss events dispatched while it was

chrome/browser/renderer_host/chrome_render_message_filter.cc

Index: chrome/browser/renderer_host/chrome_render_message_filter.cc
diff --git a/chrome/browser/renderer_host/chrome_render_message_filter.cc b/chrome/browser/renderer_host/chrome_render_message_filter.cc
index c1a0eb82980ceae3f6ce3f2f2d1c05e332a7d3be..095057f247f2d2604a2dd06aad0ecfdab7cf7f66 100644
--- a/chrome/browser/renderer_host/chrome_render_message_filter.cc
+++ b/chrome/browser/renderer_host/chrome_render_message_filter.cc
@@ -91,16 +91,11 @@ bool ChromeRenderMessageFilter::OnMessageReceived(const IPC::Message& message,
                         OnExtensionAddLazyListener)
     IPC_MESSAGE_HANDLER(ExtensionHostMsg_RemoveLazyListener,
                         OnExtensionRemoveLazyListener)
-    IPC_MESSAGE_HANDLER(ExtensionHostMsg_ExtensionEventAck, OnExtensionEventAck)
     IPC_MESSAGE_HANDLER(ExtensionHostMsg_CloseChannel, OnExtensionCloseChannel)
     IPC_MESSAGE_HANDLER(ExtensionHostMsg_RequestForIOThread,
                         OnExtensionRequestForIOThread)
     IPC_MESSAGE_HANDLER(ExtensionHostMsg_ShouldUnloadAck,
                         OnExtensionShouldUnloadAck)
-    IPC_MESSAGE_HANDLER(ExtensionHostMsg_IncrementLazyKeepaliveCount,
-                        OnExtensionIncrementLazyKeepaliveCount)
-    IPC_MESSAGE_HANDLER(ExtensionHostMsg_DecrementLazyKeepaliveCount,
-                        OnExtensionDecrementLazyKeepaliveCount)
     IPC_MESSAGE_HANDLER(ExtensionHostMsg_GenerateUniqueID,
                         OnExtensionGenerateUniqueID)
     IPC_MESSAGE_HANDLER(ExtensionHostMsg_UnloadAck, OnExtensionUnloadAck)
@@ -150,12 +145,9 @@ void ChromeRenderMessageFilter::OverrideThreadForMessage(
     case ExtensionHostMsg_RemoveListener::ID:
     case ExtensionHostMsg_AddLazyListener::ID:
     case ExtensionHostMsg_RemoveLazyListener::ID:
-    case ExtensionHostMsg_ExtensionEventAck::ID:
     case ExtensionHostMsg_CloseChannel::ID:
     case ExtensionHostMsg_ShouldUnloadAck::ID:
     case ExtensionHostMsg_UnloadAck::ID:
-    case ExtensionHostMsg_IncrementLazyKeepaliveCount::ID:
-    case ExtensionHostMsg_DecrementLazyKeepaliveCount::ID:
     case ChromeViewHostMsg_UpdatedCacheStats::ID:
       *thread = BrowserThread::UI;
       break;
@@ -388,13 +380,6 @@ void ChromeRenderMessageFilter::OnExtensionRemoveLazyListener(
         event_name, extension_id);
 }
 
-void ChromeRenderMessageFilter::OnExtensionEventAck(
-    const std::string& extension_id) {
-  if (profile_->GetExtensionEventRouter())
-    profile_->GetExtensionEventRouter()->OnExtensionEventAck(
-        profile_, extension_id);
-}
-
 void ChromeRenderMessageFilter::OnExtensionCloseChannel(int port_id,
                                                         bool connection_error) {
   if (!content::RenderProcessHost::FromID(render_process_id_))
@@ -429,32 +414,6 @@ void ChromeRenderMessageFilter::OnExtensionUnloadAck(
     profile_->GetExtensionProcessManager()->OnUnloadAck(extension_id);
 }
 
-void ChromeRenderMessageFilter::OnExtensionIncrementLazyKeepaliveCount(
-    const std::string& extension_id) {
-  ExtensionService* service =
-      ExtensionSystem::Get(profile_)->extension_service();
-  ExtensionProcessManager* process_manager =
-      ExtensionSystem::Get(profile_)->process_manager();
-  if (process_manager && service) {
-    const Extension* extension = service->extensions()->GetByID(extension_id);
-    if (extension)
-      process_manager->IncrementLazyKeepaliveCount(extension);
-  }
-}
-
-void ChromeRenderMessageFilter::OnExtensionDecrementLazyKeepaliveCount(
-    const std::string& extension_id) {
-  ExtensionService* service =
-      ExtensionSystem::Get(profile_)->extension_service();
-  ExtensionProcessManager* process_manager =
-      ExtensionSystem::Get(profile_)->process_manager();
-  if (process_manager && service) {
-    const Extension* extension = service->extensions()->GetByID(extension_id);
-    if (extension)
-      process_manager->DecrementLazyKeepaliveCount(extension);
-  }
-}
-
 void ChromeRenderMessageFilter::OnExtensionGenerateUniqueID(int* unique_id) {
   static int next_unique_id = 1;
   *unique_id = next_unique_id++;