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/crash_upload_list.cc b/chrome/browser/crash_upload_list.cc
index 2c80d3a..0200ad9 100644
--- a/chrome/browser/crash_upload_list.cc
+++ b/chrome/browser/crash_upload_list.cc
@@ -17,6 +17,8 @@
 #include "chrome/common/chrome_paths.h"
 #include "content/public/browser/browser_thread.h"
 
+using content::BrowserThread;
+
 CrashUploadList::CrashInfo::CrashInfo(const std::string& c, const base::Time& t)
     : crash_id(c), crash_time(t) {}