Move BrowserThread to content namespace.

TBR=owners
BUG=98716

Review URL: http://codereview.chromium.org/8437002

git-svn-id: svn://svn.chromium.org/chrome/trunk/src@108270 0039d316-1c4b-4281-b951-d872f2087c98
diff --git a/chrome/browser/browser_process_impl.cc b/chrome/browser/browser_process_impl.cc
index 81c463a..55cdd5b 100644
--- a/chrome/browser/browser_process_impl.cc
+++ b/chrome/browser/browser_process_impl.cc
@@ -129,6 +129,8 @@
 static const int kEndSessionTimeoutSeconds = 10;
 #endif
 
+using content::BrowserThread;
+
 BrowserProcessImpl::BrowserProcessImpl(const CommandLine& command_line)
     : created_resource_dispatcher_host_(false),
       created_metrics_service_(false),
@@ -893,7 +895,7 @@
   created_cache_thread_ = true;
 
   scoped_ptr<base::Thread> thread(
-      new DeprecatedBrowserThread(BrowserThread::CACHE));
+      new content::DeprecatedBrowserThread(BrowserThread::CACHE));
   base::Thread::Options options;
   options.message_loop_type = MessageLoop::TYPE_IO;
   if (!thread->StartWithOptions(options))