devtools: Make it possible to override the navigation referrer

content/browser/devtools/protocol/page_handler.h

 // Copyright 2014 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.
 
 #ifndef CONTENT_BROWSER_DEVTOOLS_PROTOCOL_PAGE_HANDLER_H_
 #define CONTENT_BROWSER_DEVTOOLS_PROTOCOL_PAGE_HANDLER_H_
 
 #include <stddef.h>
 
 #include "base/compiler_specific.h"
@@ skipping 41 matching lines @@
       cc::CompositorFrameMetadata frame_metadata);
   void DidAttachInterstitialPage();
   void DidDetachInterstitialPage();
   bool screencast_enabled() const { return enabled_ && screencast_enabled_; }
 
   Response Enable() override;
   Response Disable() override;
 
   Response Reload(Maybe<bool> bypassCache,
                   Maybe<std::string> script_to_evaluate_on_load) override;
-  Response Navigate(const std::string& url, Page::FrameId* frame_id) override;
+  Response Navigate(const std::string& url,
+                    Maybe<std::string> referrer,
+                    Page::FrameId* frame_id) override;
   Response StopLoading() override;
 
   using NavigationEntries = protocol::Array<Page::NavigationEntry>;
   Response GetNavigationHistory(
       int* current_index,
       std::unique_ptr<NavigationEntries>* entries) override;
   Response NavigateToHistoryEntry(int entry_id) override;
 
   void CaptureScreenshot(
       Maybe<std::string> format,
@@ skipping 76 matching lines @@
   NotificationRegistrar registrar_;
   base::WeakPtrFactory<PageHandler> weak_factory_;
 
   DISALLOW_COPY_AND_ASSIGN(PageHandler);
 };
 
 }  // namespace protocol
 }  // namespace content
 
 #endif  // CONTENT_BROWSER_DEVTOOLS_PROTOCOL_PAGE_HANDLER_H_