make NavigationGesture part of public content API and use it outside content

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 "base/debug/dump_without_crashing.h"
 #include "base/logging.h"
 #include "content/browser/browsing_data/clear_site_data_throttle.h"
 #include "content/browser/child_process_security_policy_impl.h"
@@ skipping 188 matching lines @@
       << "This accessor should not be called before the request is started.";
   return method_ == "POST";
 }
 
 const Referrer& NavigationHandleImpl::GetReferrer() {
   CHECK_NE(INITIAL, state_)
       << "This accessor should not be called before the request is started.";
   return sanitized_referrer_;
 }
 
-bool NavigationHandleImpl::HasUserGesture() {
-  return gesture_ == NavigationGestureUser;
+NavigationGesture NavigationHandleImpl::GetNavigationGesture() {
+  return gesture_;
 }
 
 ui::PageTransition NavigationHandleImpl::GetPageTransition() {
   CHECK_NE(INITIAL, state_)
       << "This accessor should not be called before the request is started.";
   return transition_;
 }
 
 bool NavigationHandleImpl::IsExternalProtocol() {
   CHECK_NE(INITIAL, state_)
@@ skipping 312 matching lines @@
     GetDelegate()->ReadyToCommitNavigation(this);
 }
 
 void NavigationHandleImpl::DidCommitNavigation(
     const FrameHostMsg_DidCommitProvisionalLoad_Params& params,
     bool same_page,
     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);
-  // TODO(clamy): DCHECK that params.gesture matches
-  // has_user_gesture_. See crbug.com/667572.
+  // TODO(clamy): DCHECK_EQ(gesture_, params.gesture). See crbug.com/667572.
 
   method_ = params.method;
   transition_ = params.transition;
   render_frame_host_ = render_frame_host;
 
   // 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;
@@ skipping 231 matching lines @@
     throttles_to_register.push_back(std::move(clear_site_data_throttle));
 
   if (throttles_to_register.size() > 0) {
     throttles_.insert(throttles_.begin(), throttles_to_register.begin(),
                       throttles_to_register.end());
     throttles_to_register.weak_clear();
   }
 }
 
 }  // namespace content