Remove extension process side of chrome.devtools API, it's obsolete.

chrome/common/extensions/api/extension_api.cc

 // 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.
 
 #include "chrome/common/extensions/api/extension_api.h"
 
 #include <algorithm>
 #include <string>
 #include <vector>
 
@@ skipping 336 matching lines @@
   RegisterSchema("browserAction", ReadFromResource(
       IDR_EXTENSION_API_JSON_BROWSERACTION));
   RegisterSchema("browsingData", ReadFromResource(
       IDR_EXTENSION_API_JSON_BROWSINGDATA));
   RegisterSchema("commands", ReadFromResource(
       IDR_EXTENSION_API_JSON_COMMANDS));
   RegisterSchema("declarativeContent", ReadFromResource(
       IDR_EXTENSION_API_JSON_DECLARATIVE_CONTENT));
   RegisterSchema("declarativeWebRequest", ReadFromResource(
       IDR_EXTENSION_API_JSON_DECLARATIVE_WEBREQUEST));
-  RegisterSchema("devtools", ReadFromResource(
-      IDR_EXTENSION_API_JSON_DEVTOOLS));
   RegisterSchema("experimental.input.virtualKeyboard", ReadFromResource(
       IDR_EXTENSION_API_JSON_EXPERIMENTAL_INPUT_VIRTUALKEYBOARD));
   RegisterSchema("experimental.processes", ReadFromResource(
       IDR_EXTENSION_API_JSON_EXPERIMENTAL_PROCESSES));
   RegisterSchema("experimental.rlz", ReadFromResource(
       IDR_EXTENSION_API_JSON_EXPERIMENTAL_RLZ));
   RegisterSchema("runtime", ReadFromResource(
       IDR_EXTENSION_API_JSON_RUNTIME));
   RegisterSchema("experimental.speechInput", ReadFromResource(
       IDR_EXTENSION_API_JSON_EXPERIMENTAL_SPEECHINPUT));
@@ skipping 410 matching lines @@
 
 void ExtensionAPI::LoadAllSchemas() {
   while (unloaded_schemas_.size()) {
     std::map<std::string, base::StringPiece>::iterator it =
         unloaded_schemas_.begin();
     LoadSchema(it->first, it->second);
   }
 }
 
 }  // namespace extensions