Add support for GL_CHROMIUM_pixel_transfer_buffer_object.

gpu/command_buffer/service/gles2_cmd_decoder_unittest.cc

Index: gpu/command_buffer/service/gles2_cmd_decoder_unittest.cc
diff --git a/gpu/command_buffer/service/gles2_cmd_decoder_unittest.cc b/gpu/command_buffer/service/gles2_cmd_decoder_unittest.cc
index e76cc96522eb45c859354f783e22678a8693eeef..535762a0141159cda7af7b6cd0682a8c59b067c0 100644
--- a/gpu/command_buffer/service/gles2_cmd_decoder_unittest.cc
+++ b/gpu/command_buffer/service/gles2_cmd_decoder_unittest.cc
@@ -7050,6 +7050,48 @@ TEST_F(GLES2DecoderTest, IsEnabledReturnsCachedValue) {
   }
 }
 
+TEST_F(GLES2DecoderTest, PixelTransferBufferObjectCHROMIUM) {
+  GLenum target = GL_PIXEL_UNPACK_TRANSFER_BUFFER_CHROMIUM;
+  const uint8 data[] = {4, 3, 2, 1};
+  BindBuffer bind_cmd;
+  bind_cmd.Init(target, client_buffer_id_);
+  EXPECT_EQ(error::kNoError, ExecuteCmd(bind_cmd));
+  BufferManager* manager = group().buffer_manager();
+  BufferManager::BufferInfo* info =
+      manager->GetBufferInfo(client_buffer_id_);
+  ASSERT_TRUE(info != NULL);
+  EXPECT_EQ(0, info->size());
+
+  int8* shm_buf = static_cast<int8*>(shared_memory_address_);
+  memcpy(shm_buf, data, sizeof(data));
+  BufferData data_cmd;
+  data_cmd.Init(target, sizeof(data), shared_memory_id_, shared_memory_offset_,
+           GL_STREAM_DRAW);
+  EXPECT_EQ(error::kNoError, ExecuteCmd(data_cmd));
+
+  // Check if buffer data is set correctly.
+  const uint8* buf = static_cast<const uint8*>(
+      info->GetRange(0, sizeof(data)));
+  ASSERT_TRUE(buf != NULL);
+  ASSERT_EQ(data[0], buf[0]);
+  ASSERT_EQ(data[sizeof(data) - 1], buf[sizeof(data) - 1]);
+
+  // Check if shared memory buffer is used for texture upload.
+  DoBindTexture(GL_TEXTURE_2D, client_texture_id_, kServiceTextureId);
+  EXPECT_CALL(*gl_, GetError())
+      .WillRepeatedly(Return(GL_NO_ERROR));
+  TexImage2D cmd1;
+  EXPECT_CALL(*gl_, TexImage2D(
+      GL_TEXTURE_2D, 0, GL_RGBA, 1, 1, 0, GL_RGBA,
+      GL_UNSIGNED_BYTE, shm_buf))
+      .Times(1)
+      .RetiresOnSaturation();
+  cmd1.Init(
+      GL_TEXTURE_2D, 0, GL_RGBA, 1, 1, 0, GL_RGBA,
+      GL_UNSIGNED_BYTE, 0, 0);
+  EXPECT_EQ(error::kNoError, ExecuteCmd(cmd1));
+}
+
 // TODO(gman): Complete this test.
 // TEST_F(GLES2DecoderTest, CompressedTexImage2DGLError) {
 // }