Add mojo::StrongBindingSet and use it in GeolocationServiceContext.

content/browser/web_contents/web_contents_impl.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_impl.h"
 
 #include <utility>
 
 #include "base/command_line.h"
 #include "base/lazy_instance.h"
@@ skipping 379 matching lines @@
       closed_by_user_gesture_(false),
       minimum_zoom_percent_(static_cast<int>(kMinimumZoomFactor * 100)),
       maximum_zoom_percent_(static_cast<int>(kMaximumZoomFactor * 100)),
       render_view_message_source_(NULL),
       render_frame_message_source_(NULL),
       fullscreen_widget_routing_id_(MSG_ROUTING_NONE),
       fullscreen_widget_had_focus_at_shutdown_(false),
       is_subframe_(false),
       force_disable_overscroll_content_(false),
       last_dialog_suppressed_(false),
-      geolocation_service_context_(new GeolocationServiceContext()),
       accessibility_mode_(
           BrowserAccessibilityStateImpl::GetInstance()->accessibility_mode()),
       audio_stream_monitor_(this),
       virtual_keyboard_requested_(false),
       loading_weak_factory_(this) {
   frame_tree_.SetFrameRemoveListener(
       base::Bind(&WebContentsImpl::OnFrameRemoved,
                  base::Unretained(this)));
 #if defined(ENABLE_BROWSER_CDMS)
   media_web_contents_observer_.reset(new MediaWebContentsObserver(this));
@@ skipping 1662 matching lines @@
     return nullptr;
 
   WebContents* guest = guest_manager->GetGuestByInstanceID(
       render_frame_host->GetProcess()->GetID(), browser_plugin_instance_id);
   if (!guest)
     return nullptr;
 
   return guest->GetMainFrame();
 }
 
-GeolocationServiceContext* WebContentsImpl::GetGeolocationServiceContext() {
-  return geolocation_service_context_.get();
-}
-
 WakeLockServiceContext* WebContentsImpl::GetWakeLockServiceContext() {
   return wake_lock_service_context_.get();
 }
 
 void WebContentsImpl::OnShowValidationMessage(
     const gfx::Rect& anchor_in_root_view,
     const base::string16& main_text,
     const base::string16& sub_text) {
   if (delegate_)
     delegate_->ShowValidationMessage(
@@ skipping 2593 matching lines @@
   return NULL;
 }
 
 void WebContentsImpl::SetForceDisableOverscrollContent(bool force_disable) {
   force_disable_overscroll_content_ = force_disable;
   if (view_)
     view_->SetOverscrollControllerEnabled(CanOverscrollContent());
 }
 
 }  // namespace content