Remove dead DocumentState metrics tracking code

components/test_runner/web_frame_test_client.cc

 // Copyright 2016 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 "components/test_runner/web_frame_test_client.h"
 
 #include <memory>
 
 #include "base/logging.h"
 #include "base/strings/string_piece.h"
@@ skipping 379 matching lines @@
           std::string("Downloading URL with suggested filename \"") +
           suggested_name.utf8() + "\"\n");
     } else {
       delegate_->PrintMessage(std::string("Loading URL externally - \"") +
                               URLDescription(request.url()) + "\"\n");
     }
     delegate_->TestFinished();
   }
 }
 
-void WebFrameTestClient::didStartProvisionalLoad(blink::WebLocalFrame* frame,
-                                                 double trigering_event_time) {
+void WebFrameTestClient::didStartProvisionalLoad(blink::WebLocalFrame* frame) {
   test_runner()->tryToSetTopLoadingFrame(frame);
 
   if (test_runner()->shouldDumpFrameLoadCallbacks()) {
     PrintFrameDescription(delegate_, frame);
     delegate_->PrintMessage(" - didStartProvisionalLoadForFrame\n");
   }
 
   if (test_runner()->shouldDumpUserGestureInFrameLoadCallbacks()) {
     PrintFrameuserGestureStatus(delegate_, frame,
                                 " - in didStartProvisionalLoadForFrame\n");
@@ skipping 287 matching lines @@
 blink::WebEffectiveConnectionType
 WebFrameTestClient::getEffectiveConnectionType() {
   return test_runner()->effective_connection_type();
 }
 
 TestRunner* WebFrameTestClient::test_runner() {
   return web_view_test_proxy_base_->test_interfaces()->GetTestRunner();
 }
 
 }  // namespace test_runner