Ensure GL initialization only happens once, and provide common init path

cc/test/cc_test_suite.cc

Index: cc/test/cc_test_suite.cc
diff --git a/cc/test/cc_test_suite.cc b/cc/test/cc_test_suite.cc
index 8b3228a03cd9563ac4d29c4a86428d8124e9d83c..537b3be2955e77fc20cdc1f0a0cb1783e450d6fc 100644
--- a/cc/test/cc_test_suite.cc
+++ b/cc/test/cc_test_suite.cc
@@ -11,6 +11,7 @@
 #include "base/threading/thread_id_name_manager.h"
 #include "cc/base/switches.h"
 #include "cc/test/paths.h"
+#include "ui/gl/gl_surface.h"
 
 namespace cc {
 
@@ -21,6 +22,7 @@ CCTestSuite::~CCTestSuite() {}
 
 void CCTestSuite::Initialize() {
   base::TestSuite::Initialize();
+  gfx::GLSurface::InitializeOneOffForTests();
   CCPaths::RegisterPathProvider();
 
   message_loop_.reset(new base::MessageLoop);