Remove another unnecessary include that got added in-between my try and commit

git-svn-id: svn://svn.chromium.org/chrome/trunk/src@112607 0039d316-1c4b-4281-b951-d872f2087c98

chrome/browser/metrics/tracking_synchronizer.cc

@@ -9,7 +9,6 @@
 #include "base/process_util.h"
 #include "base/threading/thread.h"
 #include "base/tracked_objects.h"
-#include "content/common/child_process_info.h"
 #include "content/public/browser/browser_thread.h"
 #include "content/public/browser/profiler_controller.h"
 #include "content/public/common/process_type.h"