[Devtools] Allow User-Agent header override for Websockets

content/browser/devtools/protocol/network_handler.h

Index: content/browser/devtools/protocol/network_handler.h
diff --git a/content/browser/devtools/protocol/network_handler.h b/content/browser/devtools/protocol/network_handler.h
index 9e1c1fc67030eaaf8d3874a61c1e1cbb7420ccb1..d02a2c50923a1f988b9e0beda164e01b02f9582e 100644
--- a/content/browser/devtools/protocol/network_handler.h
+++ b/content/browser/devtools/protocol/network_handler.h
@@ -26,6 +26,8 @@ class NetworkHandler {
 
   void SetRenderFrameHost(RenderFrameHostImpl* host);
   void SetClient(std::unique_ptr<Client> client);
+  void Detached();
+  std::string GetUserAgentOverride();
 
   Response ClearBrowserCache();
   Response ClearBrowserCookies();
@@ -43,6 +45,8 @@ class NetworkHandler {
                                  scoped_refptr<CertificateDetails>* result);
   Response ShowCertificateViewer(int certificate_id);
 
+  Response SetUserAgentOverride(const std::string& userAgent);
+
  private:
   void SendGetCookiesResponse(
       DevToolsCommandId command_id,
@@ -51,6 +55,7 @@ class NetworkHandler {
 
   RenderFrameHostImpl* host_;
   std::unique_ptr<Client> client_;
+  std::string user_agent_override_;
   base::WeakPtrFactory<NetworkHandler> weak_factory_;
 
   DISALLOW_COPY_AND_ASSIGN(NetworkHandler);