Convert NavigationMetricsRecorder to use the new navigation callbacks.

content/browser/frame_host/navigation_handle_impl.cc

 // Copyright 2015 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 "content/browser/frame_host/navigation_handle_impl.h"
 
 #include <iterator>
 
 #include "base/debug/dump_without_crashing.h"
 #include "base/logging.h"
@@ skipping 259 matching lines @@
 }
 
 bool NavigationHandleImpl::HasCommitted() {
   return state_ == DID_COMMIT || state_ == DID_COMMIT_ERROR_PAGE;
 }
 
 bool NavigationHandleImpl::IsErrorPage() {
   return state_ == DID_COMMIT_ERROR_PAGE;
 }
 
+const GURL& NavigationHandleImpl::GetPreviousURL() {
+  DCHECK(state_ == DID_COMMIT || state_ == DID_COMMIT_ERROR_PAGE);
+  return previous_url_;
+}
+
 void NavigationHandleImpl::Resume() {
   if (state_ != DEFERRING_START && state_ != DEFERRING_REDIRECT &&
       state_ != DEFERRING_RESPONSE) {
     return;
   }
 
   NavigationThrottle::ThrottleCheckResult result = NavigationThrottle::DEFER;
   if (state_ == DEFERRING_START) {
     result = CheckWillStartRequest();
   } else if (state_ == DEFERRING_REDIRECT) {
@@ skipping 108 matching lines @@
   params.should_update_history = false;
   params.searchable_form_url = GURL();
   params.searchable_form_encoding = std::string();
   params.did_create_new_entry = false;
   params.gesture = NavigationGestureUser;
   params.was_within_same_page = false;
   params.method = "GET";
   params.page_state = PageState::CreateFromURL(url);
   params.contents_mime_type = std::string("text/html");
 
-  DidCommitNavigation(params, false, render_frame_host_);
+  DidCommitNavigation(params, false, GURL(), render_frame_host_);
 }
 
 bool NavigationHandleImpl::WasStartedFromContextMenu() const {
   return started_from_context_menu_;
 }
 
 const GURL& NavigationHandleImpl::GetSearchableFormURL() {
   return searchable_form_url_;
 }
 
@@ skipping 145 matching lines @@
   render_frame_host_ = render_frame_host;
   state_ = READY_TO_COMMIT;
 
   if (!IsRendererDebugURL(url_))
     GetDelegate()->ReadyToCommitNavigation(this);
 }
 
 void NavigationHandleImpl::DidCommitNavigation(
     const FrameHostMsg_DidCommitProvisionalLoad_Params& params,
     bool same_page,
+    const GURL& previous_url,
     RenderFrameHostImpl* render_frame_host) {
   DCHECK(!render_frame_host_ || render_frame_host_ == render_frame_host);
   DCHECK_EQ(frame_tree_node_, render_frame_host->frame_tree_node());
   CHECK_EQ(url_, params.url);
 
   method_ = params.method;
   has_user_gesture_ = (params.gesture == NavigationGestureUser);
   transition_ = params.transition;
   render_frame_host_ = render_frame_host;
+  previous_url_ = previous_url;
 
   // If an error page reloads, net_error_code might be 200 but we still want to
   // count it as an error page.
   if (params.base_url.spec() == kUnreachableWebDataURL ||
       net_error_code_ != net::OK) {
     state_ = DID_COMMIT_ERROR_PAGE;
   } else {
     state_ = DID_COMMIT;
   }
 }
@@ skipping 241 matching lines @@
       content::AncestorThrottle::MaybeCreateThrottleFor(this);
   if (ancestor_throttle)
     throttles_.push_back(std::move(ancestor_throttle));
 
   throttles_.insert(throttles_.begin(),
                     std::make_move_iterator(throttles_to_register.begin()),
                     std::make_move_iterator(throttles_to_register.end()));
 }
 
 }  // namespace content