Linux build fix.

BUG=none
TEST=tree green
TBR=vangelis

git-svn-id: svn://svn.chromium.org/chrome/trunk/src@97017 0039d316-1c4b-4281-b951-d872f2087c98

content/browser/gpu/gpu_process_host.cc

@@ -4,6 +4,7 @@
 
 #include "content/browser/gpu/gpu_process_host.h"
 
+#include "base/base_switches.h"
 #include "base/command_line.h"
 #include "base/debug/trace_event.h"
 #include "base/memory/ref_counted.h"