Cleanup: IWYU for BrowserThread.

content/browser/browser_thread_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/browser_thread_impl.h"
 
+#include <string>
+
 #include "base/atomicops.h"
 #include "base/bind.h"
 #include "base/compiler_specific.h"
 #include "base/lazy_instance.h"
 #include "base/message_loop.h"
 #include "base/message_loop_proxy.h"
 #include "base/threading/sequenced_worker_pool.h"
 #include "base/threading/thread_restrictions.h"
+#include "content/public/browser/browser_thread_delegate.h"
 
 namespace content {
 
 namespace {
 
 // Friendly names for the well-known threads.
 static const char* g_browser_thread_names[BrowserThread::ID_COUNT] = {
   "",  // UI (name assembled in browser_main.cc).
   "Chrome_DBThread",  // DB
   "Chrome_WebKitThread",  // WEBKIT_DEPRECATED
   "Chrome_FileThread",  // FILE
   "Chrome_FileUserBlockingThread",  // FILE_USER_BLOCKING
   "Chrome_ProcessLauncherThread",  // PROCESS_LAUNCHER
   "Chrome_CacheThread",  // CACHE
   "Chrome_IOThread",  // IO
 };
 
 struct BrowserThreadGlobals {
   BrowserThreadGlobals()
       : blocking_pool(new base::SequencedWorkerPool(3, "BrowserBlocking")) {
-    memset(threads, 0,
-           BrowserThread::ID_COUNT * sizeof(BrowserThreadImpl*));
+    memset(threads, 0, BrowserThread::ID_COUNT * sizeof(threads[0]));
     memset(thread_delegates, 0,
-           BrowserThread::ID_COUNT * sizeof(BrowserThreadDelegate*));
+           BrowserThread::ID_COUNT * sizeof(thread_delegates[0]));
   }
 
   // This lock protects |threads|. Do not read or modify that array
   // without holding this lock. Do not block while holding this lock.
   base::Lock lock;
 
   // This array is protected by |lock|. The threads are not owned by this
   // array. Typically, the threads are owned on the UI thread by
   // content::BrowserMainLoop. BrowserThreadImpl objects remove themselves from
   // this array upon destruction.
@@ skipping 341 matching lines @@
   AtomicWord* storage = reinterpret_cast<AtomicWord*>(
       &globals.thread_delegates[identifier]);
   AtomicWord old_pointer = base::subtle::NoBarrier_AtomicExchange(
       storage, reinterpret_cast<AtomicWord>(delegate));
 
   // This catches registration when previously registered.
   DCHECK(!delegate || !old_pointer);
 }
 
 }  // namespace content