Plumb through EGL_NV_post_sub_buffer and GLX_MESA_copy_sub_buffer.

gpu/command_buffer/common/gles2_cmd_format_test_autogen.h

Index: gpu/command_buffer/common/gles2_cmd_format_test_autogen.h
diff --git a/gpu/command_buffer/common/gles2_cmd_format_test_autogen.h b/gpu/command_buffer/common/gles2_cmd_format_test_autogen.h
index a150a58ef6a8f4932821b1caaeb7eb5c4c3a3e01..9c414a954cd45149933acc6d94cfcf487ce2fff4 100644
--- a/gpu/command_buffer/common/gles2_cmd_format_test_autogen.h
+++ b/gpu/command_buffer/common/gles2_cmd_format_test_autogen.h
@@ -3559,5 +3559,24 @@ TEST_F(GLES2FormatTest, GetTranslatedShaderSourceANGLE) {
       next_cmd, sizeof(cmd));
 }
 
+TEST_F(GLES2FormatTest, PostSubBufferCHROMIUM) {
+  PostSubBufferCHROMIUM& cmd = *GetBufferAs<PostSubBufferCHROMIUM>();
+  void* next_cmd = cmd.Set(
+      &cmd,
+      static_cast<GLint>(11),
+      static_cast<GLint>(12),
+      static_cast<GLint>(13),
+      static_cast<GLint>(14));
+  EXPECT_EQ(static_cast<uint32>(PostSubBufferCHROMIUM::kCmdId),
+            cmd.header.command);
+  EXPECT_EQ(sizeof(cmd), cmd.header.size * 4u);
+  EXPECT_EQ(static_cast<GLint>(11), cmd.x);
+  EXPECT_EQ(static_cast<GLint>(12), cmd.y);
+  EXPECT_EQ(static_cast<GLint>(13), cmd.width);
+  EXPECT_EQ(static_cast<GLint>(14), cmd.height);
+  CheckBytesWrittenMatchesExpectedSize(
+      next_cmd, sizeof(cmd));
+}
+
 #endif  // GPU_COMMAND_BUFFER_COMMON_GLES2_CMD_FORMAT_TEST_AUTOGEN_H_