Add User Actions and adding more details to UMA metrics for overscroll navigation

content/browser/web_contents/web_contents_view_aura.cc

 // Copyright (c) 2012 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/web_contents/web_contents_view_aura.h"
 
 #include <stddef.h>
 #include <stdint.h>
 
 #include "base/auto_reset.h"
@@ skipping 1024 matching lines @@
 void WebContentsViewAura::OnOverscrollComplete(OverscrollMode mode) {
   if (web_contents_->GetDelegate() &&
       IsScrollEndEffectEnabled() &&
       (mode == OVERSCROLL_NORTH || mode == OVERSCROLL_SOUTH)) {
     web_contents_->GetDelegate()->OverscrollComplete();
   }
   CompleteOverscrollNavigation(mode);
 }
 
 void WebContentsViewAura::OnOverscrollModeChange(OverscrollMode old_mode,
-                                                 OverscrollMode new_mode) {
+                                                 OverscrollMode new_mode,
+                                                 OverscrollSource source) {
   if (old_mode == OVERSCROLL_NORTH || old_mode == OVERSCROLL_SOUTH)
     OverscrollUpdateForWebContentsDelegate(0);
 
   current_overscroll_gesture_ = new_mode;
-  navigation_overlay_->relay_delegate()->OnOverscrollModeChange(old_mode,
-                                                                new_mode);
+  navigation_overlay_->relay_delegate()->OnOverscrollModeChange(
+      old_mode, new_mode, source);
   completed_overscroll_gesture_ = OVERSCROLL_NONE;
 }
 
 ////////////////////////////////////////////////////////////////////////////////
 // WebContentsViewAura, aura::WindowDelegate implementation:
 
 gfx::Size WebContentsViewAura::GetMinimumSize() const {
   return gfx::Size();
 }
 
@@ skipping 262 matching lines @@
                                         bool allow_multiple_selection) {
   NOTIMPLEMENTED() << " show " << items.size() << " menu items";
 }
 
 void WebContentsViewAura::HidePopupMenu() {
   NOTIMPLEMENTED();
 }
 #endif
 
 }  // namespace content