Introduce WebRequestEventRouterDelegate.

extensions/browser/api/web_request/web_request_event_router_delegate.h

Index: extensions/browser/api/web_request/web_request_event_router_delegate.h
diff --git a/extensions/browser/api/web_request/web_request_event_router_delegate.h b/extensions/browser/api/web_request/web_request_event_router_delegate.h
new file mode 100644
index 0000000000000000000000000000000000000000..875946fe4718a55843aab9d01270f3709e4bd0e0
--- /dev/null
+++ b/extensions/browser/api/web_request/web_request_event_router_delegate.h
@@ -0,0 +1,57 @@
+// Copyright (c) 2014 The Chromium Authors. All rights reserved.

[Ken Rockot(use gerrit already), 2014/09/19 20:52:27]

New files should use new copyright notice style (no "(c)", just "Copyright 2014
...")

[Xi Han, 2014/09/19 22:05:56]

Done.

+// Use of this source code is governed by a BSD-style license that can be
+// found in the LICENSE file.
+
+#ifndef EXTENSIONS_BROWSER_API_WEB_REQUEST_WEB_REQUEST_EVENT_ROUTER_DELEGATE_H_
+#define EXTENSIONS_BROWSER_API_WEB_REQUEST_WEB_REQUEST_EVENT_ROUTER_DELEGATE_H_
+
+#include <string>
+
+#include "base/values.h"
+#include "url/gurl.h"

[Ken Rockot(use gerrit already), 2014/09/19 20:52:27]

you can just forward-declare GURL instead of including this here

Actually you can forward-declare base::DictionaryValue as well.

[Xi Han, 2014/09/19 22:05:56]

Done.

+
+namespace content {
+class ResourceRequestInfo;

[Ken Rockot(use gerrit already), 2014/09/19 20:52:27]

not used

[Xi Han, 2014/09/19 22:05:56]

Removed.

+}  // namespace content

[Ken Rockot(use gerrit already), 2014/09/19 20:52:28]

FYI I don't think it's necessary to include closing namespace comments for small
forward declaration blocks like this, but I guess it doesn't hurt.

[Xi Han, 2014/09/19 22:05:56]

I agree:)

+
+namespace net {
+class URLRequest;
+}  // namspace net
+
+namespace extension_web_request_api_helpers {
+struct EventResponseDelta;
+}  // extension_web_request_api_helpers
+
+namespace extensions {
+
+// A delegate class of WebRequestApi that are not a part of chrome.
+class WebRequestEventRouterDelegate {
+ public:
+  WebRequestEventRouterDelegate();
+  virtual ~WebRequestEventRouterDelegate();
+
+  // Looks up the tab and window ID for a given request.
+  // Called on the IO thread.
+  virtual void ExtractExtraRequestDetails(
+      net::URLRequest* request, base::DictionaryValue* out) = 0;
+
+  // Called to check extra parameters (e.g., tab_id, windown_id) when filtering
+  // event listeners.
+  virtual bool OnGetMachingListernersImplCheck(
+      int tab_id, int window_id, net::URLRequest* request);
+
+  // Logs an extension action.
+  virtual void LogExtensionActivity(
+      void* profile_id,

[Ken Rockot(use gerrit already), 2014/09/19 20:52:28]

Could you change this to browser_context_id? And actually can you remind me why
we're using a void* instead of just using a BrowserContext*?

[Fady Samuel, 2014/09/19 20:56:26]

IIRC, we are on the IO thread here, but I'm not 100% sure.

[Xi Han, 2014/09/19 22:05:56]

Done.

+      bool is_incognito,
+      const std::string& extension_id,
+      const GURL& url,
+      const std::string& api_calli,
+      const extension_web_request_api_helpers::EventResponseDelta& delta) = 0;
+
+  DISALLOW_COPY_AND_ASSIGN(WebRequestEventRouterDelegate);
+};
+
+}  // namespace extensions
+
+#endif  // EXTENSIONS_BROWSER_API_WEB_REQUEST_WEB_REQUEST_EVENT_ROUTER_DELEGATE_H_