Make ProfileImageDownloader available to non-chromeos code

chrome/browser/chromeos/login/image_decoder.cc

-// Copyright (c) 2011 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/chromeos/login/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"
-
-using content::BrowserThread;
-
-namespace chromeos {
-
-ImageDecoder::ImageDecoder(Delegate* delegate,
-                           const std::string& image_data)
-    : delegate_(delegate),
-      image_data_(image_data.begin(), image_data.end()),
-      target_thread_id_(BrowserThread::UI) {
-}
-
-ImageDecoder::~ImageDecoder() {}
-
-void ImageDecoder::Start() {
-  if (!BrowserThread::GetCurrentThreadIdentifier(&target_thread_id_)) {
-    NOTREACHED();
-    return;
-  }
-  BrowserThread::PostTask(
-     BrowserThread::IO, FROM_HERE,
-     base::Bind(&ImageDecoder::DecodeImageInSandbox, this, image_data_));
-}
-
-bool ImageDecoder::OnMessageReceived(const IPC::Message& message) {
-  bool handled = true;
-  IPC_BEGIN_MESSAGE_MAP(ImageDecoder, message)
-    IPC_MESSAGE_HANDLER(ChromeUtilityHostMsg_DecodeImage_Succeeded,
-                        OnDecodeImageSucceeded)
-    IPC_MESSAGE_HANDLER(ChromeUtilityHostMsg_DecodeImage_Failed,
-                        OnDecodeImageFailed)
-    IPC_MESSAGE_UNHANDLED(handled = false)
-  IPC_END_MESSAGE_MAP_EX()
-  return handled;
-}
-
-void ImageDecoder::OnDecodeImageSucceeded(const SkBitmap& decoded_image) {
-  DCHECK(BrowserThread::CurrentlyOn(target_thread_id_));
-  if (delegate_)
-    delegate_->OnImageDecoded(this, decoded_image);
-}
-
-void ImageDecoder::OnDecodeImageFailed() {
-  DCHECK(BrowserThread::CurrentlyOn(target_thread_id_));
-  if (delegate_)
-    delegate_->OnDecodeImageFailed(this);
-}
-
-void ImageDecoder::DecodeImageInSandbox(
-    const std::vector<unsigned char>& image_data) {
-  DCHECK(BrowserThread::CurrentlyOn(BrowserThread::IO));
-  UtilityProcessHost* utility_process_host =
-      new UtilityProcessHost(this,
-                             target_thread_id_);
-  utility_process_host->Send(new ChromeUtilityMsg_DecodeImage(image_data));
-}
-
-}  // namespace chromeos