Allow textures to be moved from one GL context group to another.

gpu/command_buffer/tests/gl_unittests.cc

 // Copyright (c) 2012 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
+#define GL_GLEXT_PROTOTYPES
+
 #include <GLES2/gl2.h>
+#include <GLES2/gl2ext.h>
 
+#include "gpu/command_buffer/service/mailbox_manager.h"
 #include "gpu/command_buffer/tests/gl_manager.h"
 #include "testing/gmock/include/gmock/gmock.h"
 #include "testing/gtest/include/gtest/gtest.h"
+#include "ui/gfx/gl/gl_share_group.h"
 
 namespace gpu {
 
 class GLTest : public testing::Test {
  protected:
+  GLTest() : gl_(new gles2::MailboxManager, new gfx::GLShareGroup) {
+  }
+
   virtual void SetUp() {
     gl_.Initialize(gfx::Size(4, 4));
   }
 
   virtual void TearDown() {
     gl_.Destroy();
   }
 
   GLManager gl_;
 };
 
 // Test that GL is at least minimally working.
 TEST_F(GLTest, Basic) {
   glClearColor(0.0f, 1.0f, 0.0f, 1.0f);
   glClear(GL_COLOR_BUFFER_BIT);
   uint8 pixels[4] = { 0, };
   glReadPixels(0, 0, 1, 1, GL_RGBA, GL_UNSIGNED_BYTE, pixels);
   EXPECT_EQ(0u, pixels[0]);
   EXPECT_EQ(255u, pixels[1]);
   EXPECT_EQ(0u, pixels[2]);
   EXPECT_EQ(255u, pixels[3]);
 }
 
 }  // namespace gpu