Move BrowserMessageFilter to public, and into content namespace.

chrome/browser/spellchecker/spellcheck_platform_mac.mm

 // 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.
 
 // Integration with OS X native spellchecker.
 
 #include "chrome/browser/spellchecker/spellcheck_platform_mac.h"
 
 #import <Cocoa/Cocoa.h>
 
 #include "base/logging.h"
 #include "base/mac/foundation_util.h"
 #include "base/mac/scoped_nsexception_enabler.h"
 #include "base/metrics/histogram.h"
 #include "base/sys_string_conversions.h"
 #include "base/task.h"
 #include "base/time.h"
 #include "chrome/common/spellcheck_common.h"
 #include "chrome/common/spellcheck_messages.h"
-#include "content/browser/browser_message_filter.h"
+#include "content/public/browser/browser_message_filter.h"
 #include "content/public/browser/browser_thread.h"
 #include "third_party/WebKit/Source/WebKit/chromium/public/WebTextCheckingResult.h"
 
 using base::TimeTicks;
+using content::BrowserMessageFilter;
 using content::BrowserThread;
 
 namespace {
 // The number of characters in the first part of the language code.
 const unsigned int kShortLanguageCodeSize = 2;
 
 // +[NSSpellChecker sharedSpellChecker] can throw exceptions depending
 // on the state of the pasteboard, or possibly as a result of
 // third-party code (when setting up services entries).  The following
 // receives nil if an exception is thrown, in which case
@@ skipping 262 matching lines @@
                       int identifier,
                       int document_tag,
                       const string16& text, BrowserMessageFilter* destination) {
   BrowserThread::PostTask(
       BrowserThread::FILE, FROM_HERE,
       new TextCheckingTask(
           destination, route_id, identifier, text, document_tag));
 }
 
 }  // namespace spellcheck_mac