Refactor ShortcutHelper and merge in BookmarkUtils

chrome/browser/android/webapps/add_to_homescreen_data_fetcher.cc

 // Copyright 2015 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/android/shortcut_data_fetcher.h"
+#include "chrome/browser/android/webapps/add_to_homescreen_data_fetcher.h"
 
 #include "base/basictypes.h"
 #include "base/location.h"
 #include "base/strings/string16.h"
 #include "base/task/cancelable_task_tracker.h"
 #include "chrome/browser/favicon/favicon_service_factory.h"
 #include "chrome/browser/manifest/manifest_icon_selector.h"
 #include "chrome/browser/profiles/profile.h"
 #include "chrome/common/chrome_constants.h"
 #include "chrome/common/render_messages.h"
 #include "chrome/common/web_application_info.h"
 #include "components/dom_distiller/core/url_utils.h"
 #include "components/favicon/core/favicon_service.h"
 #include "content/public/browser/browser_thread.h"
 #include "content/public/browser/user_metrics.h"
 #include "content/public/browser/web_contents.h"
 #include "content/public/browser/web_contents_observer.h"
 #include "content/public/common/frame_navigate_params.h"
 #include "content/public/common/manifest.h"
 #include "third_party/WebKit/public/platform/modules/screen_orientation/WebScreenOrientationLockType.h"
 #include "ui/gfx/codec/png_codec.h"
 #include "ui/gfx/favicon_size.h"
 #include "ui/gfx/screen.h"
 #include "url/gurl.h"
 
 using content::Manifest;
 
 // Android's preferred icon size in DP is 48, as defined in
 // http://developer.android.com/design/style/iconography.html
-const int ShortcutDataFetcher::kPreferredIconSizeInDp = 48;
+const int AddToHomescreenDataFetcher::kPreferredIconSizeInDp = 48;
 
-ShortcutDataFetcher::ShortcutDataFetcher(
+AddToHomescreenDataFetcher::AddToHomescreenDataFetcher(
     content::WebContents* web_contents,
     Observer* observer)
     : WebContentsObserver(web_contents),
       weak_observer_(observer),
       is_waiting_for_web_application_info_(false),
       is_icon_saved_(false),
       is_ready_(false),
       icon_timeout_timer_(false, false),
       shortcut_info_(dom_distiller::url_utils::GetOriginalUrlFromDistillerUrl(
                      web_contents->GetURL())),
       preferred_icon_size_in_px_(kPreferredIconSizeInDp *
           gfx::Screen::GetScreenFor(web_contents->GetNativeView())->
               GetPrimaryDisplay().device_scale_factor()) {
   // Send a message to the renderer to retrieve information about the page.
   is_waiting_for_web_application_info_ = true;
   Send(new ChromeViewMsg_GetWebApplicationInfo(routing_id()));
 }
 
-void ShortcutDataFetcher::OnDidGetWebApplicationInfo(
+void AddToHomescreenDataFetcher::OnDidGetWebApplicationInfo(
     const WebApplicationInfo& received_web_app_info) {
   is_waiting_for_web_application_info_ = false;
   if (!web_contents() || !weak_observer_) return;
 
   // Sanitize received_web_app_info.
   WebApplicationInfo web_app_info = received_web_app_info;
   web_app_info.title =
       web_app_info.title.substr(0, chrome::kMaxMetaTagAttributeLength);
   web_app_info.description =
       web_app_info.description.substr(0, chrome::kMaxMetaTagAttributeLength);
@@ skipping 19 matching lines @@
     case WebApplicationInfo::MOBILE_CAPABLE_APPLE:
       content::RecordAction(
           base::UserMetricsAction("webapps.AddShortcut.AppShortcutApple"));
       break;
     case WebApplicationInfo::MOBILE_CAPABLE_UNSPECIFIED:
       content::RecordAction(
           base::UserMetricsAction("webapps.AddShortcut.Bookmark"));
       break;
   }
 
-  web_contents()->GetManifest(base::Bind(&ShortcutDataFetcher::OnDidGetManifest,
-                                         this));
+  web_contents()->GetManifest(
+      base::Bind(&AddToHomescreenDataFetcher::OnDidGetManifest, this));
 }
 
-void ShortcutDataFetcher::OnDidGetManifest(const content::Manifest& manifest) {
+void AddToHomescreenDataFetcher::OnDidGetManifest(
+    const content::Manifest& manifest) {
   if (!web_contents() || !weak_observer_) return;
 
   if (!manifest.IsEmpty()) {
       content::RecordAction(
           base::UserMetricsAction("webapps.AddShortcut.Manifest"));
       shortcut_info_.UpdateFromManifest(manifest);
   }
 
   GURL icon_src = ManifestIconSelector::FindBestMatchingIcon(
       manifest.icons,
       kPreferredIconSizeInDp,
       gfx::Screen::GetScreenFor(web_contents()->GetNativeView()));
   if (icon_src.is_valid()) {
     // Grab the best icon from the manifest.
     web_contents()->DownloadImage(
         icon_src,
         false,
         preferred_icon_size_in_px_,
         false,
-        base::Bind(&ShortcutDataFetcher::OnManifestIconFetched,
+        base::Bind(&AddToHomescreenDataFetcher::OnManifestIconFetched,
                    this));
   } else {
     // Grab the best favicon for the page.
     FetchFavicon();
   }
 
   weak_observer_->OnUserTitleAvailable(shortcut_info_.user_title);
 
   // Kick off a timeout for downloading the icon.  If an icon isn't set within
   // the timeout, fall back to using a dynamically-generated launcher icon.
   icon_timeout_timer_.Start(FROM_HERE,
                             base::TimeDelta::FromMilliseconds(3000),
-                            base::Bind(&ShortcutDataFetcher::OnFaviconFetched,
-                                       this,
-                                       favicon_base::FaviconRawBitmapResult()));
+                            base::Bind(
+                                &AddToHomescreenDataFetcher::OnFaviconFetched,
+                                this,
+                                favicon_base::FaviconRawBitmapResult()));
 }
 
-bool ShortcutDataFetcher::OnMessageReceived(const IPC::Message& message) {
+bool AddToHomescreenDataFetcher::OnMessageReceived(
+    const IPC::Message& message) {
   if (!is_waiting_for_web_application_info_) return false;
 
   bool handled = true;
 
-  IPC_BEGIN_MESSAGE_MAP(ShortcutDataFetcher, message)
+  IPC_BEGIN_MESSAGE_MAP(AddToHomescreenDataFetcher, message)
     IPC_MESSAGE_HANDLER(ChromeViewHostMsg_DidGetWebApplicationInfo,
                         OnDidGetWebApplicationInfo)
     IPC_MESSAGE_UNHANDLED(handled = false)
   IPC_END_MESSAGE_MAP()
 
   return handled;
 }
 
-ShortcutDataFetcher::~ShortcutDataFetcher() {
+AddToHomescreenDataFetcher::~AddToHomescreenDataFetcher() {
   DCHECK(!weak_observer_);
 }
 
-void ShortcutDataFetcher::FetchFavicon() {
+void AddToHomescreenDataFetcher::FetchFavicon() {
   if (!web_contents() || !weak_observer_) return;
 
   Profile* profile =
       Profile::FromBrowserContext(web_contents()->GetBrowserContext());
 
   // Grab the best, largest icon we can find to represent this bookmark.
   // TODO(dfalcantara): Try combining with the new BookmarksHandler once its
   //                    rewrite is further along.
   std::vector<int> icon_types;
   icon_types.push_back(favicon_base::FAVICON);
   icon_types.push_back(favicon_base::TOUCH_PRECOMPOSED_ICON |
                        favicon_base::TOUCH_ICON);
   favicon::FaviconService* favicon_service =
       FaviconServiceFactory::GetForProfile(profile,
                                            ServiceAccessType::EXPLICIT_ACCESS);
 
   // Using favicon if its size is not smaller than platform required size,
   // otherwise using the largest icon among all avaliable icons.
   int threshold_to_get_any_largest_icon = preferred_icon_size_in_px_ - 1;
   favicon_service->GetLargestRawFaviconForPageURL(
       shortcut_info_.url,
       icon_types,
       threshold_to_get_any_largest_icon,
-      base::Bind(&ShortcutDataFetcher::OnFaviconFetched, this),
+      base::Bind(&AddToHomescreenDataFetcher::OnFaviconFetched, this),
       &favicon_task_tracker_);
 }
 
-void ShortcutDataFetcher::OnFaviconFetched(
+void AddToHomescreenDataFetcher::OnFaviconFetched(
     const favicon_base::FaviconRawBitmapResult& bitmap_result) {
   if (!web_contents() || !weak_observer_ || is_icon_saved_) {
     return;
   }
 
   content::BrowserThread::PostTask(
       content::BrowserThread::IO,
       FROM_HERE,
-      base::Bind(&ShortcutDataFetcher::CreateLauncherIcon,
+      base::Bind(&AddToHomescreenDataFetcher::CreateLauncherIcon,
                  this,
                  bitmap_result));
 }
 
-void ShortcutDataFetcher::CreateLauncherIcon(
+void AddToHomescreenDataFetcher::CreateLauncherIcon(
     const favicon_base::FaviconRawBitmapResult& bitmap_result) {
   if (!web_contents() || !weak_observer_) return;
 
   DCHECK_CURRENTLY_ON(content::BrowserThread::IO);
   SkBitmap icon_bitmap;
   if (bitmap_result.is_valid()) {
     gfx::PNGCodec::Decode(bitmap_result.bitmap_data->front(),
                           bitmap_result.bitmap_data->size(),
                           &icon_bitmap);
   }
 
   if (weak_observer_) {
     icon_bitmap = weak_observer_->FinalizeLauncherIcon(icon_bitmap,
                                                        shortcut_info_.url);
   }
 
   content::BrowserThread::PostTask(
       content::BrowserThread::UI,
       FROM_HERE,
-      base::Bind(&ShortcutDataFetcher::NotifyObserver, this, icon_bitmap));
+      base::Bind(&AddToHomescreenDataFetcher::NotifyObserver,
+                 this,
+                 icon_bitmap));
 }
 
-void ShortcutDataFetcher::OnManifestIconFetched(
+void AddToHomescreenDataFetcher::OnManifestIconFetched(
     int id,
     int http_status_code,
     const GURL& url,
     const std::vector<SkBitmap>& bitmaps,
     const std::vector<gfx::Size>& sizes) {
   if (!web_contents() || !weak_observer_) return;
 
   // If getting the candidate manifest icon failed, the ShortcutHelper should
   // fallback to the favicon.
   // Otherwise, it sets the state as if there was no manifest icon pending.
   if (bitmaps.empty()) {
     FetchFavicon();
     return;
   }
 
   // There might be multiple bitmaps returned. The one to pick is bigger or
   // equal to the preferred size. |bitmaps| is ordered from bigger to smaller.
   int preferred_bitmap_index = 0;
   for (size_t i = 0; i < bitmaps.size(); ++i) {
     if (bitmaps[i].height() < preferred_icon_size_in_px_)
       break;
     preferred_bitmap_index = i;
   }
 
   NotifyObserver(bitmaps[preferred_bitmap_index]);
 }
 
-void ShortcutDataFetcher::NotifyObserver(const SkBitmap& bitmap) {
+void AddToHomescreenDataFetcher::NotifyObserver(const SkBitmap& bitmap) {
   DCHECK_CURRENTLY_ON(content::BrowserThread::UI);
   if (!web_contents() || !weak_observer_ || is_icon_saved_)
     return;
 
   is_icon_saved_ = true;
   shortcut_icon_ = bitmap;
   is_ready_ = true;
   weak_observer_->OnDataAvailable(shortcut_info_, shortcut_icon_);
 }