Small non-essential fixes around the code.

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/metrics/histogram.h"
@@ skipping 295 matching lines @@
       notify_disconnection_(false),
       dialog_manager_(NULL),
       is_showing_before_unload_dialog_(false),
       opener_web_ui_type_(WebUI::kNoWebUI),
       closed_by_user_gesture_(false),
       minimum_zoom_percent_(static_cast<int>(kMinimumZoomFactor * 100)),
       maximum_zoom_percent_(static_cast<int>(kMaximumZoomFactor * 100)),
       temporary_zoom_settings_(false),
       content_restrictions_(0),
       color_chooser_(NULL),
+      message_source_(NULL),
       fullscreen_widget_routing_id_(MSG_ROUTING_NONE) {
 }
 
 WebContentsImpl::~WebContentsImpl() {
   is_being_destroyed_ = true;
 
   for (std::set<RenderWidgetHostImpl*>::iterator iter =
            created_widgets_.begin(); iter != created_widgets_.end(); ++iter) {
     (*iter)->DetachDelegate();
   }
@@ skipping 3222 matching lines @@
 
 BrowserPluginGuest* WebContentsImpl::GetBrowserPluginGuest() const {
   return browser_plugin_guest_.get();
 }
 
 BrowserPluginEmbedder* WebContentsImpl::GetBrowserPluginEmbedder() const {
   return browser_plugin_embedder_.get();
 }
 
 }  // namespace content