Revert r118525 / Re-land r118240 - the build failure was a flake.

gpu/command_buffer/service/gles2_cmd_decoder_autogen.h

Index: gpu/command_buffer/service/gles2_cmd_decoder_autogen.h
diff --git a/gpu/command_buffer/service/gles2_cmd_decoder_autogen.h b/gpu/command_buffer/service/gles2_cmd_decoder_autogen.h
index 5c06a57204e46a96239e19a8f3eaad78b1cb6d89..d36f425c052825e206a57d31cfeb26f23f2afbf3 100644
--- a/gpu/command_buffer/service/gles2_cmd_decoder_autogen.h
+++ b/gpu/command_buffer/service/gles2_cmd_decoder_autogen.h
@@ -1,4 +1,4 @@
-// Copyright (c) 2011 The Chromium Authors. All rights reserved.
+// Copyright (c) 2012 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.
 
@@ -2546,7 +2546,7 @@ error::Error GLES2DecoderImpl::HandleTexStorage2DEXT(
     uint32 immediate_data_size, const gles2::TexStorage2DEXT& c) {
   GLenum target = static_cast<GLenum>(c.target);
   GLsizei levels = static_cast<GLsizei>(c.levels);
-  GLint internalFormat = static_cast<GLint>(c.internalFormat);
+  GLenum internalFormat = static_cast<GLenum>(c.internalFormat);
   GLsizei width = static_cast<GLsizei>(c.width);
   GLsizei height = static_cast<GLsizei>(c.height);
   if (!validators_->texture_target.IsValid(target)) {
@@ -2559,8 +2559,7 @@ error::Error GLES2DecoderImpl::HandleTexStorage2DEXT(
   }
   if (!validators_->texture_internal_format_storage.IsValid(internalFormat)) {
     SetGLError(
-        GL_INVALID_VALUE,
-        "glTexStorage2DEXT: internalFormat GL_INVALID_VALUE");
+        GL_INVALID_ENUM, "glTexStorage2DEXT: internalFormat GL_INVALID_ENUM");
     return error::kNoError;
   }
   if (width < 0) {