PlzNavigate: identify same-page browser-initiated navigation.

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 518 matching lines @@
   if (result != NavigationThrottle::DEFER)
     RunCompleteCallback(result);
 }
 
 void NavigationHandleImpl::ReadyToCommitNavigation(
     RenderFrameHostImpl* render_frame_host) {
   DCHECK(!render_frame_host_ || render_frame_host_ == render_frame_host);
   render_frame_host_ = render_frame_host;
   state_ = READY_TO_COMMIT;
 
-  if (!IsRendererDebugURL(url_))
+  if (!IsRendererDebugURL(url_) && !IsSamePage())
     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);
@@ skipping 256 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