launcher: Remove old files and update DEPS whitelist.

chrome/browser/ui/views/ash/launcher/launcher_favicon_loader.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/ui/views/ash/launcher/launcher_favicon_loader.h"
-
-#include "base/logging.h"
-#include "chrome/browser/favicon/favicon_util.h"
-#include "chrome/browser/ui/views/ash/launcher/browser_launcher_item_controller.h"
-#include "chrome/common/favicon_url.h"
-#include "chrome/common/icon_messages.h"
-#include "content/public/browser/render_view_host.h"
-#include "content/public/browser/web_contents.h"
-#include "content/public/browser/web_contents_delegate.h"
-#include "googleurl/src/gurl.h"
-#include "third_party/skia/include/core/SkBitmap.h"
-
-namespace internal {
-
-const int kMaxBitmapSize = 256;
-
-////////////////////////////////////////////////////////////////////////////////
-// FaviconBitmapHandler fetchs all bitmaps with the 'icon' (or 'shortcut icon')
-// link tag, storing the one that best matches ash::kLauncherPreferredSize.
-// These icon bitmaps are not resized and are not cached beyond the lifetime
-// of the class. Bitmaps larger than kMaxBitmapSize are ignored.
-
-class FaviconBitmapHandler {
- public:
-  FaviconBitmapHandler(content::WebContents* web_contents,
-                       LauncherFaviconLoader::Delegate* delegate)
-      : web_contents_(web_contents),
-        delegate_(delegate) {
-  }
-
-  ~FaviconBitmapHandler() {}
-
-  const SkBitmap& bitmap() const { return bitmap_; }
-
-  void OnUpdateFaviconURL(int32 page_id,
-                          const std::vector<FaviconURL>& candidates);
-
-  void OnDidDownloadFavicon(int id,
-                            const GURL& image_url,
-                            bool errored,
-                            int requested_size,
-                            const std::vector<SkBitmap>& bitmaps);
-
- private:
-  void DownloadFavicon(const GURL& image_url);
-  void AddFavicon(const GURL& image_url, const SkBitmap& new_bitmap);
-
-  content::WebContents* web_contents_;
-  LauncherFaviconLoader::Delegate* delegate_;
-
-  typedef std::set<GURL> UrlSet;
-  // Map of pending download urls.
-  UrlSet pending_requests_;
-  // Map of processed urls.
-  UrlSet processed_requests_;
-  // Current bitmap and source url.
-  SkBitmap bitmap_;
-  GURL bitmap_url_;
-
-  DISALLOW_COPY_AND_ASSIGN(FaviconBitmapHandler);
-};
-
-void FaviconBitmapHandler::OnUpdateFaviconURL(
-    int32 page_id,
-    const std::vector<FaviconURL>& candidates) {
-  // This function receives a complete list of faviocn urls for the page.
-  // It may get called multiple times with the same list, and will also get
-  // called any time an item is added or removed. As such, we track processed
-  // and pending urls, but only until they are removed from the list.
-  UrlSet new_pending, new_processed;
-  // Create a map of valid favicon urls.
-  std::set<GURL> urls;
-  for (std::vector<FaviconURL>::const_iterator iter = candidates.begin();
-       iter != candidates.end(); ++iter) {
-    if (iter->icon_type != FaviconURL::FAVICON)
-      continue;
-    const GURL& url = iter->icon_url;
-    if (url.is_valid())
-      urls.insert(url);
-    // Preserve matching pending requests amd processed requests.
-    if (pending_requests_.find(url) != pending_requests_.end())
-      new_pending.insert(url);
-    if (processed_requests_.find(url) != processed_requests_.end())
-      new_processed.insert(url);
-  }
-  pending_requests_ = new_pending;
-  processed_requests_ = new_processed;
-  // Reset bitmap_ if no longer valid (i.e. not in the list of urls).
-  if (urls.find(bitmap_url_) == urls.end()) {
-    bitmap_url_ = GURL();
-    bitmap_.reset();
-  }
-  // Request any new urls.
-  for (std::set<GURL>::iterator iter = urls.begin();
-       iter != urls.end(); ++iter) {
-    if (processed_requests_.find(*iter) != processed_requests_.end())
-      continue;  // Skip already processed downloads.
-    if (pending_requests_.find(*iter) != pending_requests_.end())
-      continue;  // Skip already pending downloads.
-    DownloadFavicon(*iter);
-  }
-}
-
-void FaviconBitmapHandler::DownloadFavicon(const GURL& image_url) {
-  int image_size = 0;  // Request the full sized image.
-  pending_requests_.insert(image_url);
-  content::RenderViewHost* host = web_contents_->GetRenderViewHost();
-  FaviconUtil::DownloadFavicon(host, image_url, image_size);
-}
-
-
-void FaviconBitmapHandler::OnDidDownloadFavicon(
-    int id,
-    const GURL& image_url,
-    bool errored,
-    int requested_size,
-    const std::vector<SkBitmap>& bitmaps) {
-  UrlSet::iterator iter = pending_requests_.find(image_url);
-  if (iter == pending_requests_.end()) {
-    // Updates are received for all downloads; ignore unrequested urls.
-    return;
-  }
-  pending_requests_.erase(iter);
-
-  // Favicon bitmaps are ordered by decreasing width.
-  if (!errored && !bitmaps.empty())
-    AddFavicon(image_url, bitmaps[0]);
-}
-
-void FaviconBitmapHandler::AddFavicon(const GURL& image_url,
-                                      const SkBitmap& new_bitmap) {
-  processed_requests_.insert(image_url);
-  if (new_bitmap.height() > kMaxBitmapSize ||
-      new_bitmap.width() > kMaxBitmapSize)
-    return;
-  if (new_bitmap.height() < ash::kLauncherPreferredSize)
-    return;
-  if (!bitmap_.isNull()) {
-    // We want the smallest icon that is large enough.
-    if (new_bitmap.height() > bitmap_.height())
-      return;
-  }
-  bitmap_url_ = image_url;
-  bitmap_ = new_bitmap;
-  delegate_->FaviconUpdated();
-}
-
-}  // namespace internal
-
-////////////////////////////////////////////////////////////////////////////////
-
-LauncherFaviconLoader::LauncherFaviconLoader(Delegate* delegate,
-                                             content::WebContents* web_contents)
-    : content::WebContentsObserver(web_contents) {
-  favicon_handler_.reset(
-      new internal::FaviconBitmapHandler(web_contents, delegate));
-}
-
-LauncherFaviconLoader::~LauncherFaviconLoader() {
-}
-
-bool LauncherFaviconLoader::OnMessageReceived(const IPC::Message& message) {
-  bool message_handled = false;   // Allow other handlers to receive these.
-  IPC_BEGIN_MESSAGE_MAP(LauncherFaviconLoader, message)
-    IPC_MESSAGE_HANDLER(IconHostMsg_DidDownloadFavicon, OnDidDownloadFavicon)
-    IPC_MESSAGE_HANDLER(IconHostMsg_UpdateFaviconURL, OnUpdateFaviconURL)
-    IPC_MESSAGE_UNHANDLED(message_handled = false)
-  IPC_END_MESSAGE_MAP()
-  return message_handled;
-}
-
-SkBitmap LauncherFaviconLoader::GetFavicon() const {
-  return favicon_handler_->bitmap();
-}
-
-void LauncherFaviconLoader::OnUpdateFaviconURL(
-    int32 page_id,
-    const std::vector<FaviconURL>& candidates) {
-  favicon_handler_->OnUpdateFaviconURL(page_id, candidates);
-}
-
-void LauncherFaviconLoader::OnDidDownloadFavicon(
-    int id,
-    const GURL& image_url,
-    bool errored,
-    int requested_size,
-    const std::vector<SkBitmap>& bitmaps) {
-  favicon_handler_->OnDidDownloadFavicon(
-      id, image_url, errored, requested_size, bitmaps);
-}