devtools: Make it possible to override the navigation referrer

content/browser/devtools/protocol/page_handler.h

Index: content/browser/devtools/protocol/page_handler.h
diff --git a/content/browser/devtools/protocol/page_handler.h b/content/browser/devtools/protocol/page_handler.h
index c366e15327b0358b7cebdb3cb370056ab50df0bd..4efbdbdf64d13aa34152d22a296cb3c57cb0b5b4 100644
--- a/content/browser/devtools/protocol/page_handler.h
+++ b/content/browser/devtools/protocol/page_handler.h
@@ -59,7 +59,9 @@ class PageHandler : public DevToolsDomainHandler,
 
   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>;