Get correct backbuffer format when context is on screen....

gpu/command_buffer/service/gles2_cmd_decoder_unittest_base.cc

 // Copyright (c) 2009 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 "base/string_number_conversions.h"
@@ skipping 29 matching lines @@
   gl_.reset(new StrictMock<MockGLInterface>());
   ::gfx::GLInterface::SetGLInterface(gl_.get());
   group_ = ContextGroup::Ref(new ContextGroup());
 
   InSequence sequence;
 
   TestHelper::SetupContextGroupInitExpectations(gl_.get(), extensions);
 
   EXPECT_TRUE(group_->Initialize(extensions));
 
+  EXPECT_CALL(*gl_, GetIntegerv(GL_ALPHA_BITS, _))
+      .WillOnce(SetArgumentPointee<1>(8))
+      .RetiresOnSaturation();
   EXPECT_CALL(*gl_, EnableVertexAttribArray(0))
       .Times(1)
       .RetiresOnSaturation();
   static GLuint attrib_0_id[] = {
     kServiceAttrib0BufferId,
   };
   static GLuint fixed_attrib_buffer_id[] = {
     kServiceFixedAttribBufferId,
   };
   EXPECT_CALL(*gl_, GenBuffersARB(arraysize(attrib_0_id), _))
@@ skipping 725 matching lines @@
 
 const char* GLES2DecoderWithShaderTestBase::kAttrib1Name = "attrib1";
 const char* GLES2DecoderWithShaderTestBase::kAttrib2Name = "attrib2";
 const char* GLES2DecoderWithShaderTestBase::kAttrib3Name = "attrib3";
 const char* GLES2DecoderWithShaderTestBase::kUniform1Name = "uniform1";
 const char* GLES2DecoderWithShaderTestBase::kUniform2Name = "uniform2[0]";
 const char* GLES2DecoderWithShaderTestBase::kUniform3Name = "uniform3[0]";
 
 }  // namespace gles2
 }  // namespace gpu