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 62b5430861476aeea43be576ca566ab2e42667fb..abe61cb5582574e9076142e500adb8327ce5b5a5 100644
--- a/cc/test/cc_test_suite.cc
+++ b/cc/test/cc_test_suite.cc
@@ -7,6 +7,7 @@
 #include "base/message_loop/message_loop.h"
 #include "base/threading/thread_id_name_manager.h"
 #include "cc/test/paths.h"
+#include "ui/gl/gl_surface.h"
 
 namespace cc {
 
@@ -17,6 +18,7 @@ CCTestSuite::~CCTestSuite() {}
 
 void CCTestSuite::Initialize() {
   base::TestSuite::Initialize();
+  gfx::GLSurface::InitializeOneOffForTests();
   CCPaths::RegisterPathProvider();
 
   message_loop_.reset(new base::MessageLoop);