Hookup clear_uniforms_before_first_program_use workaround with implementation.

gpu/command_buffer/service/gles2_cmd_decoder_unittest_base.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.
 
 #include "gpu/command_buffer/service/gles2_cmd_decoder_unittest_base.h"
 
 #include <algorithm>
 #include <string>
 #include <vector>
 
@@ skipping 1245 matching lines @@
   attach_cmd.Init(program_client_id, vertex_shader_client_id);
   EXPECT_EQ(error::kNoError, ExecuteCmd(attach_cmd));
 
   attach_cmd.Init(program_client_id, fragment_shader_client_id);
   EXPECT_EQ(error::kNoError, ExecuteCmd(attach_cmd));
 
   cmds::LinkProgram link_cmd;
   link_cmd.Init(program_client_id);
 
   EXPECT_EQ(error::kNoError, ExecuteCmd(link_cmd));
-
-  // Assume the next command will be UseProgram.
-  SetupExpectationsForClearingUniforms(uniforms, num_uniforms);

[Ken Russell (switch to Gerrit), 2014/02/04 22:15:11]

The removal of these expectations is problematic. The code path which clears
these uniforms needs to be tested. Please add a new test which tests the uniform
clearing code.

[Zhenyao Mo, 2014/02/05 02:02:41]

The ClearUniforms is covered in
ProgramManagerWithShaderTest.ClearWithSamplerTypes.

I also add a specific test in decoder unittests to make sure when the workaround
is on, uniforms are cleared with before useProgram.

 }
 
 void GLES2DecoderTestBase::DoEnableVertexAttribArray(GLint index) {
   EXPECT_CALL(*gl_, EnableVertexAttribArray(index))
       .Times(1)
       .RetiresOnSaturation();
   cmds::EnableVertexAttribArray cmd;
   cmd.Init(index);
   EXPECT_EQ(error::kNoError, ExecuteCmd(cmd));
 }
@@ skipping 156 matching lines @@
   SetupDefaultProgram();
 }
 
 // Include the auto-generated part of this file. We split this because it means
 // we can easily edit the non-auto generated parts right here in this file
 // instead of having to edit some template or the code generator.
 #include "gpu/command_buffer/service/gles2_cmd_decoder_unittest_0_autogen.h"
 
 }  // namespace gles2
 }  // namespace gpu