Add support for GL_CHROMIUM_pixel_transfer_buffer_object.

gpu/command_buffer/common/gles2_cmd_utils_implementation_autogen.h

Index: gpu/command_buffer/common/gles2_cmd_utils_implementation_autogen.h
diff --git a/gpu/command_buffer/common/gles2_cmd_utils_implementation_autogen.h b/gpu/command_buffer/common/gles2_cmd_utils_implementation_autogen.h
index 901f52af27d1b05e9ed96b8d2aa2eb90dd64f8ac..03913b4dcf187b2c8a97d9c7e85d38bf39f50f55 100644
--- a/gpu/command_buffer/common/gles2_cmd_utils_implementation_autogen.h
+++ b/gpu/command_buffer/common/gles2_cmd_utils_implementation_autogen.h
@@ -550,6 +550,7 @@ static GLES2Util::EnumToString enum_to_string_table[] = {
   { 0x80C9, "GL_BLEND_SRC_RGB", },
   { 0x80C8, "GL_BLEND_DST_RGB", },
   { 0x0504, "GL_STACK_UNDERFLOW", },
+  { 0x88EC, "GL_PIXEL_UNPACK_TRANSFER_BUFFER_CHROMIUM", },
   { 0x8059, "GL_RGB10_A2_EXT", },
   { 0x8058, "GL_RGBA8_OES", },
   { 0x00002000, "GL_DEPTH_BUFFER_BIT5_QCOM", },
@@ -634,6 +635,7 @@ static GLES2Util::EnumToString enum_to_string_table[] = {
   { 0x8CAA, "GL_READ_FRAMEBUFFER_BINDING_ANGLE", },
   { 0x40000000, "GL_MULTISAMPLE_BUFFER_BIT6_QCOM", },
   { 0x9116, "GL_SYNC_FENCE_APPLE", },
+  { 0x88EF, "GL_PIXEL_UNPACK_TRANSFER_BUFFER_BINDING_CHROMIUM", },
   { 0x00000800, "GL_DEPTH_BUFFER_BIT3_QCOM", },
   { 0x1903, "GL_RED_EXT", },
   { 0x8CE2, "GL_COLOR_ATTACHMENT2_NV", },