PlzNavigate: identify same-page browser-initiated navigation.

content/renderer/render_frame_impl.cc

 // Copyright 2013 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/renderer/render_frame_impl.h"
 
 #include <map>
 #include <string>
 #include <utility>
 #include <vector>
@@ skipping 534 matching lines @@
 }
 
 // Returns false unless this is a top-level navigation.
 bool IsTopLevelNavigation(WebFrame* frame) {
   return frame->parent() == NULL;
 }
 
 WebURLRequest CreateURLRequestForNavigation(
     const CommonNavigationParams& common_params,
     std::unique_ptr<StreamOverrideParameters> stream_override,
-    bool is_view_source_mode_enabled) {
+    bool is_view_source_mode_enabled,
+    bool is_same_document_navigation) {
   WebURLRequest request(common_params.url);
   if (is_view_source_mode_enabled)
     request.setCachePolicy(WebCachePolicy::ReturnCacheDataElseLoad);
 
   request.setHTTPMethod(WebString::fromUTF8(common_params.method));
   if (common_params.referrer.url.is_valid()) {
     WebString web_referrer = WebSecurityPolicy::generateReferrerHeader(
         common_params.referrer.policy,
         common_params.url,
         WebString::fromUTF8(common_params.referrer.url.spec()));
     if (!web_referrer.isEmpty()) {
       request.setHTTPReferrer(web_referrer, common_params.referrer.policy);
       request.addHTTPOriginIfNeeded(
           WebSecurityOrigin(url::Origin(common_params.referrer.url)));
     }
   }
 
+  request.setIsSameDocumentNavigation(is_same_document_navigation);
+
   request.setLoFiState(
       static_cast<WebURLRequest::LoFiState>(common_params.lofi_state));
 
   RequestExtraData* extra_data = new RequestExtraData();
   extra_data->set_stream_override(std::move(stream_override));
   request.setExtraData(extra_data);
 
   // Set the ui timestamp for this navigation. Currently the timestamp here is
   // only non empty when the navigation was triggered by an Android intent. The
   // timestamp is converted to a double version supported by blink. It will be
@@ skipping 4543 matching lines @@
     frame_->setCommittedFirstRealLoad();
 
   pending_navigation_params_.reset(new NavigationParams(
       common_params, StartNavigationParams(), request_params));
 
   // Send the provisional load failure.
   blink::WebURLError error =
       CreateWebURLError(common_params.url, has_stale_copy_in_cache, error_code);
   WebURLRequest failed_request = CreateURLRequestForNavigation(
       common_params, std::unique_ptr<StreamOverrideParameters>(),
-      frame_->isViewSourceModeEnabled());
+      frame_->isViewSourceModeEnabled(),
+      false); // is_same_document_navigation
 
   if (!ShouldDisplayErrorPageForFailedLoad(error_code, common_params.url)) {
     // The browser expects this frame to be loading an error page. Inform it
     // that the load stopped.
     Send(new FrameHostMsg_DidStopLoading(routing_id_));
     browser_side_navigation_pending_ = false;
     return;
   }
 
   // On load failure, a frame can ask its owner to render fallback content.
@@ skipping 665 matching lines @@
   // Create parameters for a standard navigation, indicating whether it should
   // replace the current NavigationEntry.
   blink::WebFrameLoadType load_type =
       common_params.should_replace_current_entry
           ? blink::WebFrameLoadType::ReplaceCurrentItem
           : blink::WebFrameLoadType::Standard;
   blink::WebHistoryLoadType history_load_type =
       blink::WebHistoryDifferentDocumentLoad;
   bool should_load_request = false;
   WebHistoryItem item_for_history_navigation;
-  WebURLRequest request =
-      CreateURLRequestForNavigation(common_params, std::move(stream_params),
-                                    frame_->isViewSourceModeEnabled());
+
+  bool is_same_page = request_params.is_same_document_fragment_change ||
+                      request_params.is_same_document_history_load;
+
+  WebURLRequest request = CreateURLRequestForNavigation(
+      common_params, std::move(stream_params),
+      frame_->isViewSourceModeEnabled(),
+      is_same_page);
   request.setFrameType(IsTopLevelNavigation(frame_)
                            ? blink::WebURLRequest::FrameTypeTopLevel
                            : blink::WebURLRequest::FrameTypeNested);
 
   if (IsBrowserSideNavigationEnabled() && common_params.post_data)
     request.setHTTPBody(GetWebHTTPBodyForRequestBody(common_params.post_data));
 
   // Used to determine whether this frame is actually loading a request as part
   // of a history navigation.
   bool has_history_navigation_in_frame = false;
@@ skipping 941 matching lines @@
   // event target. Potentially a Pepper plugin will receive the event.
   // In order to tell whether a plugin gets the last mouse event and which it
   // is, we set |pepper_last_mouse_event_target_| to null here. If a plugin gets
   // the event, it will notify us via DidReceiveMouseEvent() and set itself as
   // |pepper_last_mouse_event_target_|.
   pepper_last_mouse_event_target_ = nullptr;
 #endif
 }
 
 }  // namespace content