Remove EnableZygote API.

chrome/browser/image_decoder.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/browser/image_decoder.h"
 
 #include "base/bind.h"
 #include "chrome/browser/browser_process.h"
 #include "chrome/common/chrome_utility_messages.h"
 #include "content/public/browser/browser_thread.h"
@@ skipping 42 matching lines @@
   DCHECK(task_runner_->RunsTasksOnCurrentThread());
   if (delegate_)
     delegate_->OnDecodeImageFailed(this);
 }
 
 void ImageDecoder::DecodeImageInSandbox(
     const std::vector<unsigned char>& image_data) {
   DCHECK(BrowserThread::CurrentlyOn(BrowserThread::IO));
   UtilityProcessHost* utility_process_host;
   utility_process_host = UtilityProcessHost::Create(this, task_runner_.get());
-  utility_process_host->EnableZygote();
   if (image_codec_ == ROBUST_JPEG_CODEC) {
     utility_process_host->Send(
         new ChromeUtilityMsg_RobustJPEGDecodeImage(image_data));
   } else {
     utility_process_host->Send(new ChromeUtilityMsg_DecodeImage(image_data));
   }
 }