Handle extension webrequest API on the IO thread. This speeds up blocking event

chrome/browser/extensions/extension_event_router.cc

 // Copyright (c) 2011 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #include "chrome/browser/extensions/extension_event_router.h"
 
 #include "base/values.h"
 #include "chrome/browser/extensions/extension_devtools_manager.h"
 #include "chrome/browser/extensions/extension_processes_api.h"
 #include "chrome/browser/extensions/extension_processes_api_constants.h"
 #include "chrome/browser/extensions/extension_service.h"
 #include "chrome/browser/extensions/extension_tabs_module.h"
 #include "chrome/browser/extensions/extension_webrequest_api.h"
 #include "chrome/browser/profiles/profile.h"
 #include "chrome/common/extensions/extension.h"
 #include "chrome/common/extensions/extension_messages.h"
 #include "content/browser/child_process_security_policy.h"
 #include "content/browser/renderer_host/render_process_host.h"
 #include "content/common/notification_service.h"
 
 namespace {
 
 const char kDispatchEvent[] = "Event.dispatchJSON";
 
-static void DispatchEvent(RenderProcessHost* renderer,
-                          const std::string& extension_id,
-                          const std::string& event_name,
-                          const std::string& event_args,
-                          const GURL& event_url) {
-  ListValue args;
-  args.Set(0, Value::CreateStringValue(event_name));
-  args.Set(1, Value::CreateStringValue(event_args));
-  renderer->Send(new ExtensionMsg_MessageInvoke(MSG_ROUTING_CONTROL,
-      extension_id, kDispatchEvent, args, event_url));
-}
-
 static void NotifyEventListenerRemovedOnIOThread(
     ProfileId profile_id,
     const std::string& extension_id,
     const std::string& sub_event_name) {
   ExtensionWebRequestEventRouter::GetInstance()->RemoveEventListener(
       profile_id, extension_id, sub_event_name);
 }
 
 }  // namespace
 
 struct ExtensionEventRouter::EventListener {
   RenderProcessHost* process;
   std::string extension_id;
 
   explicit EventListener(RenderProcessHost* process,
                          const std::string& extension_id)
       : process(process), extension_id(extension_id) {}
 
   bool operator<(const EventListener& that) const {
     if (process < that.process)
       return true;
     if (process == that.process && extension_id < that.extension_id)
       return true;
     return false;
   }
 };
 
 // static
-bool ExtensionEventRouter::CanCrossIncognito(Profile* profile,
-                                             const std::string& extension_id) {
-  const Extension* extension =
-      profile->GetExtensionService()->GetExtensionById(extension_id, false);
-  return CanCrossIncognito(profile, extension);
-}
-
-// static
-bool ExtensionEventRouter::CanCrossIncognito(Profile* profile,
-                                             const Extension* extension) {
-  // We allow the extension to see events and data from another profile iff it
-  // uses "spanning" behavior and it has incognito access. "split" mode
-  // extensions only see events for a matching profile.
-  return
-      (profile->GetExtensionService()->IsIncognitoEnabled(extension->id()) &&
-       !extension->incognito_split_mode());
+void ExtensionEventRouter::DispatchEvent(IPC::Message::Sender* ipc_sender,
+                                         const std::string& extension_id,
+                                         const std::string& event_name,
+                                         const std::string& event_args,
+                                         const GURL& event_url) {
+  ListValue args;
+  args.Set(0, Value::CreateStringValue(event_name));
+  args.Set(1, Value::CreateStringValue(event_args));
+  ipc_sender->Send(new ExtensionMsg_MessageInvoke(MSG_ROUTING_CONTROL,
+      extension_id, kDispatchEvent, args, event_url));
 }
 
 ExtensionEventRouter::ExtensionEventRouter(Profile* profile)
     : profile_(profile),
       extension_devtools_manager_(profile->GetExtensionDevToolsManager()) {
   registrar_.Add(this, NotificationType::RENDERER_PROCESS_TERMINATED,
                  NotificationService::AllSources());
   registrar_.Add(this, NotificationType::RENDERER_PROCESS_CLOSED,
                  NotificationService::AllSources());
 }
@@ skipping 144 matching lines @@
           }
         }
       }
       break;
     }
     default:
       NOTREACHED();
       return;
   }
 }