Cleanup: de-inline a bunch of classes, rename and move "PluginInstaller" to "...

chrome/browser/notifications/balloon_host.cc

Index: chrome/browser/notifications/balloon_host.cc
===================================================================
--- chrome/browser/notifications/balloon_host.cc	(revision 72158)
+++ chrome/browser/notifications/balloon_host.cc	(working copy)
@@ -1,4 +1,4 @@
-// Copyright (c) 2010 The Chromium Authors. All rights reserved.
+// Copyright (c) 2011 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.
 
@@ -50,7 +50,7 @@
   }
 }
 
-Browser* BalloonHost::GetBrowser() const {
+Browser* BalloonHost::GetBrowser() {
   // Notifications aren't associated with a particular browser.
   return NULL;
 }