Add a second unsafe ES3 API in command buffer.

gpu/command_buffer/common/gles2_cmd_format_test_autogen.h

 // Copyright 2014 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.
 
 // This file is auto-generated from
 // gpu/command_buffer/build_gles2_cmd_buffer.py
 // It's formatted by clang-format using chromium coding style:
 //    clang-format -i -style=chromium filename
 // DO NOT EDIT!
 
@@ skipping 348 matching lines @@
   EXPECT_EQ(static_cast<GLint>(14), cmd.yoffset);
   EXPECT_EQ(static_cast<GLsizei>(15), cmd.width);
   EXPECT_EQ(static_cast<GLsizei>(16), cmd.height);
   EXPECT_EQ(static_cast<GLenum>(17), cmd.format);
   EXPECT_EQ(static_cast<GLsizei>(18), cmd.imageSize);
   EXPECT_EQ(static_cast<uint32_t>(19), cmd.data_shm_id);
   EXPECT_EQ(static_cast<uint32_t>(20), cmd.data_shm_offset);
   CheckBytesWrittenMatchesExpectedSize(next_cmd, sizeof(cmd));
 }
 
+TEST_F(GLES2FormatTest, CopyBufferSubData) {
+  cmds::CopyBufferSubData& cmd = *GetBufferAs<cmds::CopyBufferSubData>();
+  void* next_cmd =
+      cmd.Set(&cmd, static_cast<GLenum>(11), static_cast<GLenum>(12),
+              static_cast<GLintptr>(13), static_cast<GLintptr>(14),
+              static_cast<GLsizeiptr>(15));
+  EXPECT_EQ(static_cast<uint32_t>(cmds::CopyBufferSubData::kCmdId),
+            cmd.header.command);
+  EXPECT_EQ(sizeof(cmd), cmd.header.size * 4u);
+  EXPECT_EQ(static_cast<GLenum>(11), cmd.readtarget);
+  EXPECT_EQ(static_cast<GLenum>(12), cmd.writetarget);
+  EXPECT_EQ(static_cast<GLintptr>(13), cmd.readoffset);
+  EXPECT_EQ(static_cast<GLintptr>(14), cmd.writeoffset);
+  EXPECT_EQ(static_cast<GLsizeiptr>(15), cmd.size);
+  CheckBytesWrittenMatchesExpectedSize(next_cmd, sizeof(cmd));
+}
+
 TEST_F(GLES2FormatTest, CopyTexImage2D) {
   cmds::CopyTexImage2D& cmd = *GetBufferAs<cmds::CopyTexImage2D>();
   void* next_cmd = cmd.Set(&cmd, static_cast<GLenum>(11),
                            static_cast<GLint>(12), static_cast<GLenum>(13),
                            static_cast<GLint>(14), static_cast<GLint>(15),
                            static_cast<GLsizei>(16), static_cast<GLsizei>(17));
   EXPECT_EQ(static_cast<uint32_t>(cmds::CopyTexImage2D::kCmdId),
             cmd.header.command);
   EXPECT_EQ(sizeof(cmd), cmd.header.size * 4u);
   EXPECT_EQ(static_cast<GLenum>(11), cmd.target);
@@ skipping 2936 matching lines @@
 TEST_F(GLES2FormatTest, BlendBarrierKHR) {
   cmds::BlendBarrierKHR& cmd = *GetBufferAs<cmds::BlendBarrierKHR>();
   void* next_cmd = cmd.Set(&cmd);
   EXPECT_EQ(static_cast<uint32_t>(cmds::BlendBarrierKHR::kCmdId),
             cmd.header.command);
   EXPECT_EQ(sizeof(cmd), cmd.header.size * 4u);
   CheckBytesWrittenMatchesExpectedSize(next_cmd, sizeof(cmd));
 }
 
 #endif  // GPU_COMMAND_BUFFER_COMMON_GLES2_CMD_FORMAT_TEST_AUTOGEN_H_