Add GL_EXT_multisampled_render_to_texture support to command 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 8bb1ec0bb9f16d08d774d5a5a4c058602e2f6128..740e6cb82fdb4debe43989de649aa43b6012ab9f 100644
--- a/gpu/command_buffer/common/gles2_cmd_format_test_autogen.h
+++ b/gpu/command_buffer/common/gles2_cmd_format_test_autogen.h
@@ -3326,6 +3326,31 @@ TEST_F(GLES2FormatTest, RenderbufferStorageMultisampleEXT) {
       next_cmd, sizeof(cmd));
 }
 
+TEST_F(GLES2FormatTest, FramebufferTexture2DMultisampleEXT) {
+  cmds::FramebufferTexture2DMultisampleEXT& cmd =
+      *GetBufferAs<cmds::FramebufferTexture2DMultisampleEXT>();
+  void* next_cmd = cmd.Set(
+      &cmd,
+      static_cast<GLenum>(11),
+      static_cast<GLenum>(12),
+      static_cast<GLenum>(13),
+      static_cast<GLuint>(14),
+      static_cast<GLint>(15),
+      static_cast<GLsizei>(16));
+  EXPECT_EQ(
+      static_cast<uint32>(cmds::FramebufferTexture2DMultisampleEXT::kCmdId),
+            cmd.header.command);
+  EXPECT_EQ(sizeof(cmd), cmd.header.size * 4u);
+  EXPECT_EQ(static_cast<GLenum>(11), cmd.target);
+  EXPECT_EQ(static_cast<GLenum>(12), cmd.attachment);
+  EXPECT_EQ(static_cast<GLenum>(13), cmd.textarget);
+  EXPECT_EQ(static_cast<GLuint>(14), cmd.texture);
+  EXPECT_EQ(static_cast<GLint>(15), cmd.level);
+  EXPECT_EQ(static_cast<GLsizei>(16), cmd.samples);
+  CheckBytesWrittenMatchesExpectedSize(
+      next_cmd, sizeof(cmd));
+}
+
 TEST_F(GLES2FormatTest, TexStorage2DEXT) {
   cmds::TexStorage2DEXT& cmd = *GetBufferAs<cmds::TexStorage2DEXT>();
   void* next_cmd = cmd.Set(