Factor iOS native image loading into a utility function.

ios/chrome/browser/ui/omnibox/omnibox_popup_view_ios.mm

 // 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 "ios/chrome/browser/ui/omnibox/omnibox_popup_view_ios.h"
 
 #import <QuartzCore/QuartzCore.h>
 
 #include "base/logging.h"
 #include "base/memory/ptr_util.h"
 #include "base/metrics/histogram.h"
 #include "base/metrics/user_metrics.h"
 #include "base/metrics/user_metrics_action.h"
 #include "components/omnibox/browser/autocomplete_match.h"
 #include "components/omnibox/browser/omnibox_edit_model.h"
 #include "components/omnibox/browser/omnibox_popup_model.h"
 #include "components/open_from_clipboard/clipboard_recent_content.h"
 #include "ios/chrome/browser/browser_state/chrome_browser_state.h"
 #import "ios/chrome/browser/experimental_flags.h"
 #import "ios/chrome/browser/ui/omnibox/omnibox_popup_material_view_controller.h"
 #import "ios/chrome/browser/ui/omnibox/omnibox_popup_positioner.h"
 #include "ios/chrome/browser/ui/omnibox/omnibox_util.h"
 #include "ios/chrome/browser/ui/omnibox/omnibox_view_ios.h"
 #include "ios/chrome/browser/ui/ui_util.h"
+#import "ios/chrome/browser/ui/uikit_ui_util.h"
 #include "ios/chrome/grit/ios_theme_resources.h"
 #include "ios/web/public/image_fetcher/image_data_fetcher.h"
 #include "ios/web/public/web_thread.h"
 #include "net/url_request/url_request_context_getter.h"
-#include "ui/base/resource/resource_bundle.h"
 #include "ui/gfx/geometry/rect.h"
-#include "ui/gfx/image/image.h"
 
 namespace {
 const CGFloat kExpandAnimationDuration = 0.1;
 const CGFloat kCollapseAnimationDuration = 0.05;
 const CGFloat kWhiteBackgroundHeight = 74;
 NS_INLINE CGFloat ShadowHeight() {
   return IsIPadIdiom() ? 10 : 0;
 }
 }  // namespace
 
@@ skipping 25 matching lines @@
   // Adjust popupView_'s anchor point and height so that it animates down
   // from the top when it appears.
   popupLayer.anchorPoint = CGPointMake(0.5, 0);
   UIView* popupControllerView = [popup_controller_ view];
   CGRect popupControllerFrame = popupControllerView.frame;
   popupControllerFrame.origin = CGPointZero;
   popupControllerView.frame = popupControllerFrame;
   [popupView_ addSubview:popupControllerView];
   if (IsIPadIdiom()) {
     [popupView_ setAutoresizingMask:UIViewAutoresizingFlexibleWidth];
-    ResourceBundle& rb = ResourceBundle::GetSharedInstance();
-    gfx::Image shadowImage =
-        rb.GetNativeImageNamed(IDR_IOS_TOOLBAR_SHADOW_FULL_BLEED);
-    base::scoped_nsobject<UIImageView> shadowView(
-        [[UIImageView alloc] initWithImage:shadowImage.ToUIImage()]);
+    base::scoped_nsobject<UIImageView> shadowView([[UIImageView alloc]
+        initWithImage:NativeImage(IDR_IOS_TOOLBAR_SHADOW_FULL_BLEED)]);
     [shadowView setUserInteractionEnabled:NO];
     [shadowView setTranslatesAutoresizingMaskIntoConstraints:NO];
     [popupView_ addSubview:shadowView];
 
     // Add constraints to position |shadowView| at the bottom of |popupView_|
     // with the same width as |popupView_|.
     NSDictionary* views = NSDictionaryOfVariableBindings(shadowView);
     [popupView_
         addConstraints:[NSLayoutConstraint
                            constraintsWithVisualFormat:@"H:|[shadowView]|"
@@ skipping 203 matching lines @@
     UMA_HISTOGRAM_LONG_TIMES_100(
         "MobileOmnibox.PressedClipboardSuggestionAge",
         ClipboardRecentContent::GetInstance()->GetClipboardContentAge());
   }
   edit_view_->OpenMatch(match, disposition, GURL(), base::string16(), row);
 }
 
 bool OmniboxPopupViewIOS::IsOpen() const {
   return is_open_;
 }