Remove redundant SkBitmap::drawsNothing() check in AddToHomescreenDataFetcher.

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/webapps/add_to_homescreen_data_fetcher.h"
 
 #include <vector>
 
 #include "base/bind.h"
 #include "base/callback.h"
@@ skipping 154 matching lines @@
     shortcut_info_.manifest_url = data.manifest_url;
   }
 
   // Save the splash screen URL for the later download.
   splash_screen_url_ = ManifestIconSelector::FindBestMatchingIcon(
       data.manifest.icons, ideal_splash_image_size_in_dp_,
       minimum_splash_image_size_in_dp_);
 
   weak_observer_->OnUserTitleAvailable(shortcut_info_.user_title);
 
-  if (data.icon && !data.icon->drawsNothing()) {
+  if (data.icon) {
     // TODO(hanxi): implement WebAPK path if shortcut_info_.url has a secure
     // scheme and data.is_installable is true.
     shortcut_info_.icon_url = data.icon_url;
 
     // base::Bind copies the arguments internally, so it is safe to pass it
     // data.icon (which is not owned by us).
     content::BrowserThread::GetBlockingPool()
         ->PostWorkerTaskWithShutdownBehavior(
             FROM_HERE,
             base::Bind(
@@ skipping 109 matching lines @@
 void AddToHomescreenDataFetcher::NotifyObserver(const SkBitmap& icon) {
   DCHECK_CURRENTLY_ON(content::BrowserThread::UI);
   if (!web_contents() || !weak_observer_ || is_icon_saved_)
     return;
 
   is_icon_saved_ = true;
   shortcut_icon_ = icon;
   is_ready_ = true;
   weak_observer_->OnDataAvailable(shortcut_info_, shortcut_icon_);
 }