Remove the old wallpaper picker code

chrome/browser/ui/webui/options/chromeos/wallpaper_thumbnail_source.cc

Index: chrome/browser/ui/webui/options/chromeos/wallpaper_thumbnail_source.cc
diff --git a/chrome/browser/ui/webui/options/chromeos/wallpaper_thumbnail_source.cc b/chrome/browser/ui/webui/options/chromeos/wallpaper_thumbnail_source.cc
deleted file mode 100644
index ca49e11631a8f869d401fc6bef3370b26879002b..0000000000000000000000000000000000000000
--- a/chrome/browser/ui/webui/options/chromeos/wallpaper_thumbnail_source.cc
+++ /dev/null
@@ -1,259 +0,0 @@
-// 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/ui/webui/options/chromeos/wallpaper_thumbnail_source.h"
-
-#include "ash/desktop_background/desktop_background_resources.h"
-#include "base/memory/ref_counted_memory.h"
-#include "base/memory/singleton.h"
-#include "base/string_number_conversions.h"
-#include "base/string_piece.h"
-#include "base/string_util.h"
-#include "base/stringprintf.h"
-#include "base/synchronization/cancellation_flag.h"
-#include "base/threading/thread_restrictions.h"
-#include "base/threading/worker_pool.h"
-#include "chrome/browser/chromeos/login/user_manager.h"
-#include "chrome/browser/chromeos/login/wallpaper_manager.h"
-#include "chrome/browser/io_thread.h"
-#include "chrome/browser/ui/webui/chrome_url_data_manager.h"
-#include "chrome/browser/ui/webui/web_ui_util.h"
-#include "chrome/common/url_constants.h"
-#include "content/public/browser/browser_thread.h"
-#include "grit/ui_resources.h"
-#include "net/base/mime_util.h"
-#include "ui/base/layout.h"
-#include "ui/base/resource/resource_bundle.h"
-#include "ui/gfx/codec/png_codec.h"
-
-namespace chromeos {
-namespace options {
-
-class WallpaperThumbnailSource::ThumbnailEncodingOperation
-  : public base::RefCountedThreadSafe<
-        WallpaperThumbnailSource::ThumbnailEncodingOperation> {
- public:
-  ThumbnailEncodingOperation(int request_id,
-                             const chromeos::User* user,
-                             ui::ScaleFactor scale_factor,
-                             scoped_refptr<base::RefCountedBytes> data)
-      : request_id_(request_id),
-        user_(user),
-        scale_factor_(scale_factor),
-        data_(data) {
-  }
-
-  int request_id() {
-    return request_id_;
-  }
-
-  static void Run(scoped_refptr<ThumbnailEncodingOperation> teo) {
-    teo->EncodeThumbnail();
-  }
-
-  void EncodeThumbnail() {
-    if (cancel_flag_.IsSet())
-      return;
-    gfx::ImageSkia image =
-        WallpaperManager::Get()->GetCustomWallpaperThumbnail(user_->email());
-    gfx::PNGCodec::EncodeBGRASkBitmap(
-        image.GetRepresentation(scale_factor_).sk_bitmap(),
-        false, &data_->data());
-  }
-
-  void Cancel() {
-    cancel_flag_.Set();
-  }
-
- private:
-  friend class base::RefCountedThreadSafe<
-      WallpaperThumbnailSource::ThumbnailEncodingOperation>;
-
-  ~ThumbnailEncodingOperation() {}
-
-  base::CancellationFlag cancel_flag_;
-
-  int request_id_;
-
-  const chromeos::User* user_;
-
-  ui::ScaleFactor scale_factor_;
-
-  scoped_refptr<base::RefCountedBytes> data_;
-
-  DISALLOW_COPY_AND_ASSIGN(ThumbnailEncodingOperation);
-};
-
-namespace {
-
-const char kDefaultWallpaperPrefix[] = "default_";
-const char kCustomWallpaperPrefix[] = "custom_";
-
-// Parse an integer from |path| and save it to |index|. For example, default_20
-// will set |index| to 20.
-// |path| and |index| must not be NULL.
-bool ParseIndexFromPath(const std::string& path, int* index) {
-  // TODO(bshe): We should probably save a string instead of index for
-  // extensibility. Remove this function when we migrate to string preference.
-  DCHECK(index);
-  if (!StartsWithASCII(path, kDefaultWallpaperPrefix, false))
-    return false;
-  return base::StringToInt(base::StringPiece(path.begin() +
-      strlen(kDefaultWallpaperPrefix), path.end()), index);
-}
-
-// Convert |path| to corresponding IDR. Return -1 if the path is invalid.
-// |path| must not be NULL.
-// TODO(bshe): This is only used in old wallpaper picker. Remove the whole
-// file.
-int PathToIDR(const std::string& path) {
-  return -1;
-}
-
-// True if |path| is a custom wallpaper thumbnail URL and set |email| parsed
-// from |path|.
-// custom url = "custom_|email|?date" where date is current time.
-bool IsCustomWallpaperPath(const std::string& path, std::string* email) {
-  if (!StartsWithASCII(path, kCustomWallpaperPrefix, false))
-    return false;
-
-  std::string sub_path = path.substr(strlen(kCustomWallpaperPrefix));
-  *email = sub_path.substr(0, sub_path.find_first_of("?"));
-  return true;
-}
-
-}  // namespace
-
-std::string GetDefaultWallpaperThumbnailURL(int index) {
-  return StringPrintf("%s%s%d", chrome::kChromeUIWallpaperThumbnailURL,
-                      kDefaultWallpaperPrefix, index);
-}
-
-bool IsDefaultWallpaperURL(const std::string url, int* wallpaper_index) {
-  DCHECK(wallpaper_index);
-  *wallpaper_index = ash::GetInvalidWallpaperIndex();
-  if (!StartsWithASCII(url, chrome::kChromeUIWallpaperThumbnailURL, false))
-      return false;
-  std::string sub_path = url.substr(strlen(
-      chrome::kChromeUIWallpaperThumbnailURL));
-  return ParseIndexFromPath(sub_path, wallpaper_index);
-}
-
-WallpaperThumbnailSource::WallpaperThumbnailSource()
-    : DataSource(chrome::kChromeUIWallpaperThumbnailHost, NULL),
-      weak_ptr_factory_(ALLOW_THIS_IN_INITIALIZER_LIST(this)) {
-}
-
-std::string WallpaperThumbnailSource::GetMimeType(const std::string&) const {
-  return "images/png";
-}
-
-void WallpaperThumbnailSource::StartDataRequest(const std::string& full_path,
-                                                bool is_incognito,
-                                                int request_id) {
-  DCHECK(content::BrowserThread::CurrentlyOn(content::BrowserThread::IO));
-  GURL url(chrome::kChromeUIWallpaperThumbnailURL + full_path);
-  std::string path;
-  ui::ScaleFactor scale_factor;
-  web_ui_util::ParsePathAndScale(url, &path, &scale_factor);
-
-  CancelPendingCustomThumbnailEncodingOperation();
-  content::BrowserThread::PostTask(
-      content::BrowserThread::UI,
-      FROM_HERE,
-      base::Bind(&WallpaperThumbnailSource::GetCurrentUserThumbnail,
-                 this, path, scale_factor, request_id));
-}
-
-WallpaperThumbnailSource::~WallpaperThumbnailSource() {
-}
-
-void WallpaperThumbnailSource::GetCurrentUserThumbnail(
-    const std::string& path,
-    ui::ScaleFactor scale_factor,
-    int request_id) {
-  DCHECK(content::BrowserThread::CurrentlyOn(content::BrowserThread::UI));
-  std::string email;
-  if (IsCustomWallpaperPath(path, &email)) {
-    const chromeos::User* user = chromeos::UserManager::Get()->FindUser(email);
-    if (!user) {
-      content::BrowserThread::PostTask(
-          content::BrowserThread::IO,
-          FROM_HERE,
-          base::Bind(&WallpaperThumbnailSource::SendCurrentUserNullThumbnail,
-                     this, request_id));
-      return;
-    }
-    content::BrowserThread::PostTask(
-        content::BrowserThread::IO,
-        FROM_HERE,
-        base::Bind(
-            &WallpaperThumbnailSource::StartCustomThumbnailEncodingOperation,
-            this, user, scale_factor, request_id));
-    return;
-  }
-  content::BrowserThread::PostTask(
-      content::BrowserThread::IO,
-      FROM_HERE,
-      base::Bind(&WallpaperThumbnailSource::SendCurrentUserDefaultThumbnail,
-                 this, path, scale_factor, request_id));
-}
-
-void WallpaperThumbnailSource::StartCustomThumbnailEncodingOperation(
-    const chromeos::User* user,
-    ui::ScaleFactor scale_factor,
-    int request_id) {
-  DCHECK(content::BrowserThread::CurrentlyOn(content::BrowserThread::IO));
-  CancelPendingCustomThumbnailEncodingOperation();
-  scoped_refptr<base::RefCountedBytes> data = new base::RefCountedBytes();
-  thumbnail_encoding_op_ = new ThumbnailEncodingOperation(request_id,
-                                                          user,
-                                                          scale_factor,
-                                                          data);
-  base::WorkerPool::PostTaskAndReply(
-      FROM_HERE,
-      base::Bind(&ThumbnailEncodingOperation::Run, thumbnail_encoding_op_),
-      base::Bind(&WallpaperThumbnailSource::SendCurrentUserCustomThumbnail,
-                 weak_ptr_factory_.GetWeakPtr(), data, request_id),
-      true /* task_is_slow */);
-}
-
-void WallpaperThumbnailSource::CancelPendingCustomThumbnailEncodingOperation() {
-  DCHECK(content::BrowserThread::CurrentlyOn(content::BrowserThread::IO));
-  if (thumbnail_encoding_op_.get()) {
-    thumbnail_encoding_op_->Cancel();
-    SendResponse(thumbnail_encoding_op_->request_id(), NULL);
-  }
-  weak_ptr_factory_.InvalidateWeakPtrs();
-}
-
-void WallpaperThumbnailSource::SendCurrentUserNullThumbnail(int request_id) {
-  DCHECK(content::BrowserThread::CurrentlyOn(content::BrowserThread::IO));
-  SendResponse(request_id, NULL);
-}
-
-void WallpaperThumbnailSource::SendCurrentUserCustomThumbnail(
-  scoped_refptr<base::RefCountedBytes> data,
-  int request_id) {
-  DCHECK(content::BrowserThread::CurrentlyOn(content::BrowserThread::IO));
-  SendResponse(request_id, data);
-}
-
-void WallpaperThumbnailSource::SendCurrentUserDefaultThumbnail(
-  const std::string& path,
-  ui::ScaleFactor scale_factor,
-  int request_id) {
-  DCHECK(content::BrowserThread::CurrentlyOn(content::BrowserThread::IO));
-  int idr = PathToIDR(path);
-  if (idr == -1) {
-    SendResponse(request_id, NULL);
-    return;
-  }
-  const ResourceBundle& rb = ResourceBundle::GetSharedInstance();
-  SendResponse(request_id,
-               rb.LoadDataResourceBytesForScale(idr, scale_factor));
-}
-
-}  // namespace options
-}  // namespace chromeos