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

gpu/command_buffer/common/unittest_main.cc

Index: gpu/command_buffer/common/unittest_main.cc
diff --git a/gpu/command_buffer/common/unittest_main.cc b/gpu/command_buffer/common/unittest_main.cc
index e972b6ae570f829828433ff4ee42b3dd91d3977d..3216503132f48b7319e5bdbd3a4e59c190f2ad00 100644
--- a/gpu/command_buffer/common/unittest_main.cc
+++ b/gpu/command_buffer/common/unittest_main.cc
@@ -9,7 +9,7 @@
 #include "base/test/test_suite.h"
 #include "testing/gmock/include/gmock/gmock.h"
 #include "testing/gtest/include/gtest/gtest.h"
-#include "ui/gl/gl_implementation.h"
+#include "ui/gl/gl_surface.h"
 
 namespace {
 
@@ -18,6 +18,12 @@ class NoAtExitBaseTestSuite : public base::TestSuite {
   NoAtExitBaseTestSuite(int argc, char** argv)
       : base::TestSuite(argc, argv, false) {
   }
+
+  virtual void Initialize() OVERRIDE {
+    base::TestSuite::Initialize();
+    gfx::GLSurface::InitializeOneOffWithMockBindingsForTests();
+    gfx::GLSurface::InitializeDynamicMockBindingsForTests(NULL);
+  }
 };
 
 int RunTestSuite(int argc, char** argv) {
@@ -34,8 +40,6 @@ int main(int argc, char** argv) {
   base::AtExitManager exit_manager;
 #endif
   CommandLine::Init(argc, argv);
-  gfx::InitializeStaticGLBindings(gfx::kGLImplementationMockGL);
-  gfx::InitializeDynamicGLBindings(gfx::kGLImplementationMockGL, NULL);
   testing::InitGoogleMock(&argc, argv);
   return base::LaunchUnitTests(argc,
                                argv,