Pass the user_gesture context in the IPC message FrameMsg_CommitNavigation to the renderer.

content/common/navigation_params.h

 // Copyright 2014 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.
 
 #ifndef CONTENT_COMMON_NAVIGATION_PARAMS_H_
 #define CONTENT_COMMON_NAVIGATION_PARAMS_H_
 
 #include <stdint.h>
 
 #include <string>
@@ skipping 217 matching lines @@
                           int nav_entry_id,
                           bool is_same_document_history_load,
                           bool is_history_navigation_in_new_child,
                           bool has_subtree_history_items,
                           bool has_committed_real_load,
                           bool intended_as_new_entry,
                           int pending_history_list_offset,
                           int current_history_list_offset,
                           int current_history_list_length,
                           bool is_view_source,
-                          bool should_clear_history_list);
+                          bool should_clear_history_list,
+                          bool has_user_gesture);
   RequestNavigationParams(const RequestNavigationParams& other);
   ~RequestNavigationParams();
 
   // Whether or not the user agent override string should be used.
   bool is_overriding_user_agent;
 
   // Any redirect URLs that occurred before |url|. Useful for cross-process
   // navigations; defaults to empty.
   std::vector<GURL> redirects;
 
@@ skipping 78 matching lines @@
   // Timing of navigation events.
   NavigationTiming navigation_timing;
 
   // PlzNavigate
   // The ServiceWorkerProviderHost ID used for navigations, if it was already
   // created by the browser. Set to kInvalidServiceWorkerProviderId otherwise.
   // This parameter is not used in the current navigation architecture, where
   // it will always be equal to kInvalidServiceWorkerProviderId.
   int service_worker_provider_id;
 
+  // True if the navigation originated due to a user gesture.
+  bool has_user_gesture;

[jam, 2016/09/29 21:40:43]

now this can be removed from StartNavigationParams?

[ananta, 2016/09/29 22:07:37]

Done.

+
 #if defined(OS_ANDROID)
   // The real content of the data: URL. Only used in Android WebView for
   // implementing LoadDataWithBaseUrl API method to circumvent the restriction
   // on the GURL max length in the IPC layer. Short data: URLs can still be
   // passed in the |CommonNavigationParams::url| field.
   std::string data_url_as_string;
 #endif
 };
 
 // Helper struct keeping track in one place of all the parameters the browser
 // needs to provide to the renderer.
 struct NavigationParams {
   NavigationParams(const CommonNavigationParams& common_params,
                    const StartNavigationParams& start_params,
                    const RequestNavigationParams& request_params);
   ~NavigationParams();
 
   CommonNavigationParams common_params;
   StartNavigationParams start_params;
   RequestNavigationParams request_params;
 };
 
 }  // namespace content
 
 #endif  // CONTENT_COMMON_NAVIGATION_PARAMS_H_