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

content/browser/frame_host/navigation_entry_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/browser/frame_host/navigation_entry_impl.h"
 
 #include <stddef.h>
 
 #include <queue>
 #include <utility>
@@ skipping 662 matching lines @@
   return CommonNavigationParams(
       dest_url, dest_referrer, GetTransitionType(), navigation_type,
       !IsViewSourceMode(), should_replace_entry(), ui_timestamp, report_type,
       GetBaseURLForDataURL(), GetHistoryURLForDataURL(), lofi_state,
       navigation_start, method, post_body ? post_body : post_data_);
 }
 
 StartNavigationParams NavigationEntryImpl::ConstructStartNavigationParams()
     const {
   return StartNavigationParams(extra_headers(),
-#if defined(OS_ANDROID)
-                               has_user_gesture(),
-#endif
                                transferred_global_request_id().child_id,
                                transferred_global_request_id().request_id);
 }
 
 RequestNavigationParams NavigationEntryImpl::ConstructRequestNavigationParams(
     const FrameNavigationEntry& frame_entry,
     bool is_same_document_history_load,
     bool is_history_navigation_in_new_child,
     bool has_subtree_history_items,
     bool has_committed_real_load,
@@ skipping 13 matching lines @@
   int current_length_to_send = current_history_list_length;
   if (should_clear_history_list()) {
     // Set the history list related parameters to the same values a
     // NavigationController would return before its first navigation. This will
     // fully clear the RenderView's view of the session history.
     pending_offset_to_send = -1;
     current_offset_to_send = -1;
     current_length_to_send = 0;
   }
 
+  bool user_gesture = false;
+#if defined(OS_ANDROID)
+  user_gesture = has_user_gesture();

[nasko, 2016/09/30 20:21:47]

I wonder why this needs to be only for Android, but it is orthogonal to your CL.

+#endif
   RequestNavigationParams request_params(
       GetIsOverridingUserAgent(), redirects, GetCanLoadLocalResources(),
       base::Time::Now(), frame_entry.page_state(), GetPageID(), GetUniqueID(),
       is_same_document_history_load, is_history_navigation_in_new_child,
       has_subtree_history_items, has_committed_real_load, intended_as_new_entry,
       pending_offset_to_send, current_offset_to_send, current_length_to_send,
-      IsViewSourceMode(), should_clear_history_list());
+      IsViewSourceMode(), should_clear_history_list(), user_gesture);
 #if defined(OS_ANDROID)
   if (GetDataURLAsString() &&
       GetDataURLAsString()->size() <= kMaxLengthOfDataURLString) {
     // The number of characters that is enough for validating a data: URI.  From
     // the GURL's POV, the only important part here is scheme, it doesn't check
     // the actual content. Thus we can take only the prefix of the url, to avoid
     // unneeded copying of a potentially long string.
     const size_t kDataUriPrefixMaxLen = 64;
     GURL data_url(std::string(
         GetDataURLAsString()->front_as<char>(),
@@ skipping 177 matching lines @@
       return node;
 
     // Enqueue any children and keep looking.
     for (auto* child : node->children)
       work_queue.push(child);
   }
   return nullptr;
 }
 
 }  // namespace content