Another round of gcc fixes for GPU command buffers.

gpu/command_buffer/client/cmd_buffer_helper_test.cc

 /*
  * Copyright 2009, Google Inc.
  * All rights reserved.
  *
  * Redistribution and use in source and binary forms, with or without
  * modification, are permitted provided that the following conditions are
  * met:
  *
  *     * Redistributions of source code must retain the above copyright
  * notice, this list of conditions and the following disclaimer.
@@ skipping 134 matching lines @@
 };
 
 // Checks that commands in the buffer are properly executed, and that the
 // status/error stay valid.
 TEST_F(CommandBufferHelperTest, TestCommandProcessing) {
   // Check initial state of the engine - it should have been configured by the
   // helper.
   EXPECT_TRUE(parser_ != NULL);
   EXPECT_FALSE(command_buffer_->GetErrorStatus());
   EXPECT_EQ(parse_error::kParseNoError, command_buffer_->ResetParseError());
-  EXPECT_EQ(0u, command_buffer_->GetGetOffset());
+  EXPECT_EQ(0, command_buffer_->GetGetOffset());
 
   // Add 3 commands through the helper
   AddCommandWithExpect(parse_error::kParseNoError, 1, 0, NULL);
 
   CommandBufferEntry args1[2];
   args1[0].value_uint32 = 3;
   args1[1].value_float = 4.f;
   AddCommandWithExpect(parse_error::kParseNoError, 2, 2, args1);
 
   CommandBufferEntry args2[2];
@@ skipping 122 matching lines @@
 
   // Check that the commands did happen.
   Mock::VerifyAndClearExpectations(api_mock_.get());
 
   // Check the error status.
   EXPECT_FALSE(command_buffer_->GetErrorStatus());
   EXPECT_EQ(parse_error::kParseNoError, command_buffer_->ResetParseError());
 }
 
 }  // namespace gpu