Add Mac GPU logging code.

chrome/common/gpu_messages_unittest.cc

 // Copyright (c) 2006-2010 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.
 
 #include "base/logging.h"
 #include "base/scoped_ptr.h"
 #include "chrome/common/gpu_info.h"
 #include "chrome/common/gpu_messages.h"
 #include "ipc/ipc_message.h"
 #include "ipc/ipc_message_utils.h"
 #include "testing/gtest/include/gtest/gtest.h"
 
 // Test GPUInfo serialization
 TEST(GPUIPCMessageTest, GPUInfo) {
   GPUInfo input;
   // Test variables taken from Lenovo T61
   input.SetGraphicsInfo(0x10de, 0x429, L"6.14.11.7715",
-                        0xffff0300, 0xfffe0300);
+                        0xffff0300, 0xfffe0300,
+                        0x00010005);
 
   IPC::Message msg(1, 2, IPC::Message::PRIORITY_NORMAL);
   IPC::WriteParam(&msg, input);
 
   GPUInfo output;
   void* iter = NULL;
   EXPECT_TRUE(IPC::ReadParam(&msg, &iter, &output));
   EXPECT_EQ(input.vendor_id(), output.vendor_id());
   EXPECT_EQ(input.device_id(), output.device_id());
   EXPECT_EQ(input.driver_version(), output.driver_version());
   EXPECT_EQ(input.pixel_shader_version(), output.pixel_shader_version());
   EXPECT_EQ(input.vertex_shader_version(), output.vertex_shader_version());
+  EXPECT_EQ(input.gl_version(), output.gl_version());
 
   std::string log_message;
   IPC::LogParam(output, &log_message);
   EXPECT_STREQ("<GPUInfo> 10de 429 6.14.11.7715", log_message.c_str());
 }