Use CheckedNumerics in AsyncPixelTransfersCompletedQuery, add tests

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 324 matching lines @@
       .WillOnce(SetArgumentPointee<1>(kServiceElementBufferId))
       .RetiresOnSaturation();
   GenHelper<cmds::GenBuffersImmediate>(client_element_buffer_id_);
 
   DoCreateProgram(client_program_id_, kServiceProgramId);
   DoCreateShader(GL_VERTEX_SHADER, client_shader_id_, kServiceShaderId);
 
   EXPECT_EQ(GL_NO_ERROR, GetGLError());
 }
 
-void GLES2DecoderTestBase::TearDown() {
+void GLES2DecoderTestBase::ResetDecoder() {
+  if (!decoder_.get())
+    return;
   // All Tests should have read all their GLErrors before getting here.
   EXPECT_EQ(GL_NO_ERROR, GetGLError());
 
   EXPECT_CALL(*gl_, DeleteBuffersARB(1, _))
       .Times(2)
       .RetiresOnSaturation();
 
   decoder_->EndDecoding();
   decoder_->Destroy(true);
   decoder_.reset();
   group_->Destroy(mock_decoder_.get(), false);
   engine_.reset();
   ::gfx::MockGLInterface::SetGLInterface(NULL);
   gl_.reset();
 }
 
+void GLES2DecoderTestBase::TearDown() {
+  ResetDecoder();
+}
+
 void GLES2DecoderTestBase::ExpectEnableDisable(GLenum cap, bool enable) {
   if (enable) {
     EXPECT_CALL(*gl_, Enable(cap))
         .Times(1)
         .RetiresOnSaturation();
   } else {
     EXPECT_CALL(*gl_, Disable(cap))
         .Times(1)
         .RetiresOnSaturation();
   }
@@ skipping 1039 matching lines @@
 }
 
 void GLES2DecoderTestBase::AddExpectationsForSimulatedAttrib0(
     GLsizei num_vertices, GLuint buffer_id) {
   AddExpectationsForSimulatedAttrib0WithError(
       num_vertices, buffer_id, GL_NO_ERROR);
 }
 
 GLES2DecoderWithShaderTestBase::MockCommandBufferEngine::
 MockCommandBufferEngine() {
-  data_.reset(new int8[kSharedBufferSize]);
+  shm_.reset(new base::SharedMemory());
+  shm_->CreateAndMapAnonymous(kSharedBufferSize);
+  valid_buffer_.size = kSharedBufferSize;
+  valid_buffer_.shared_memory = shm_.get();
+  valid_buffer_.ptr = shm_->memory();
   ClearSharedMemory();
-  valid_buffer_.ptr = data_.get();
-  valid_buffer_.size = kSharedBufferSize;
 }
 
 GLES2DecoderWithShaderTestBase::MockCommandBufferEngine::
 ~MockCommandBufferEngine() {}
 
 gpu::Buffer
 GLES2DecoderWithShaderTestBase::MockCommandBufferEngine::GetSharedMemoryBuffer(
     int32 shm_id) {
   return shm_id == kSharedMemoryId ? valid_buffer_ : invalid_buffer_;
 }
@@ skipping 25 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