Revert "Fix a ton of compiler warnings."

chrome/renderer/render_widget.cc

 // Copyright (c) 2009 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 "chrome/renderer/render_widget.h"
 
 #include "base/gfx/point.h"
 #include "base/gfx/size.h"
 #include "base/logging.h"
 #include "base/message_loop.h"
@@ skipping 28 matching lines @@
 using WebKit::WebRect;
 using WebKit::WebScreenInfo;
 using WebKit::WebSize;
 using WebKit::WebTextDirection;
 
 RenderWidget::RenderWidget(RenderThreadBase* render_thread, bool activatable)
     : routing_id_(MSG_ROUTING_NONE),
       webwidget_(NULL),
       opener_id_(MSG_ROUTING_NONE),
       render_thread_(render_thread),
-      host_window_(0),
+      host_window_(NULL),
       current_paint_buf_(NULL),
       current_scroll_buf_(NULL),
       next_paint_flags_(0),
       paint_reply_pending_(false),
       did_show_(false),
       is_hidden_(false),
       needs_repainting_on_restore_(false),
       has_focus_(false),
       handling_input_event_(false),
       closing_(false),
@@ skipping 812 matching lines @@
 
 void RenderWidget::CleanupWindowInPluginMoves(gfx::PluginWindowHandle window) {
   for (WebPluginGeometryVector::iterator i = plugin_window_moves_.begin();
        i != plugin_window_moves_.end(); ++i) {
     if (i->window == window) {
       plugin_window_moves_.erase(i);
       break;
     }
   }
 }