Add the suggestions UI in chrome

ios/chrome/browser/ui/browser_view_controller.mm

 // Copyright 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.
 
 #import "ios/chrome/browser/ui/browser_view_controller.h"
 
 #import <AssetsLibrary/AssetsLibrary.h>
 #import <MobileCoreServices/MobileCoreServices.h>
 #import <PassKit/PassKit.h>
 #import <Photos/Photos.h>
@@ skipping 32 matching lines @@
 #include "components/search_engines/search_engines_pref_names.h"
 #include "components/search_engines/template_url_service.h"
 #include "components/sessions/core/tab_restore_service_helper.h"
 #include "components/strings/grit/components_strings.h"
 #include "components/toolbar/toolbar_model_impl.h"
 #include "ios/chrome/app/tests_hook.h"
 #include "ios/chrome/browser/bookmarks/bookmark_model_factory.h"
 #include "ios/chrome/browser/browser_state/chrome_browser_state.h"
 #include "ios/chrome/browser/chrome_url_constants.h"
 #include "ios/chrome/browser/chrome_url_util.h"
+#import "ios/chrome/browser/content_suggestions/content_suggestions_coordinator.h"
 #include "ios/chrome/browser/experimental_flags.h"
 #import "ios/chrome/browser/favicon/favicon_loader.h"
 #include "ios/chrome/browser/favicon/ios_chrome_favicon_loader_factory.h"
 #import "ios/chrome/browser/find_in_page/find_in_page_controller.h"
 #import "ios/chrome/browser/find_in_page/find_in_page_model.h"
 #include "ios/chrome/browser/first_run/first_run.h"
 #import "ios/chrome/browser/geolocation/omnibox_geolocation_controller.h"
 #include "ios/chrome/browser/infobars/infobar_container_ios.h"
 #include "ios/chrome/browser/infobars/infobar_container_view.h"
 #import "ios/chrome/browser/metrics/new_tab_page_uma.h"
@@ skipping 314 matching lines @@
 
   // Used to display the Page Info UI.  Nil if not visible.
   base::scoped_nsobject<PageInfoViewController> _pageInfoController;
 
   // Used to display the Voice Search UI.  Nil if not visible.
   scoped_refptr<VoiceSearchController> _voiceSearchController;
 
   // Used to display the QR Scanner UI. Nil if not visible.
   base::scoped_nsobject<QRScannerViewController> _qrScannerViewController;
 
+  // Used to display the Suggestions.
+  base::scoped_nsobject<ContentSuggestionsCoordinator>
+      _contentSuggestionsCoordinator;
+
   // Used to display the Find In Page UI. Nil if not visible.
   base::scoped_nsobject<FindBarControllerIOS> _findBarController;
 
   // Used to display the No-Tabs UI for iPads.  Nil if not visible.
   base::scoped_nsobject<NoTabsController> _noTabsController;
 
   // Used to display the Print UI. Nil if not visible.
   base::scoped_nsobject<PrintController> _printController;
 
   // Records the set of domains for which full screen alert has already been
@@ skipping 3705 matching lines @@
       // before sending the command up the responder chain.
       if ([sender isKindOfClass:[UIView class]])
         _voiceSearchButton.reset(sender);
       [super chromeExecuteCommand:sender];
       break;
     case IDC_SHOW_QR_SCANNER:
       if (experimental_flags::IsQRCodeReaderEnabled()) {
         [self showQRScanner];
       }
       break;
+    case IDC_SHOW_SUGGESTIONS:
+      if (experimental_flags::IsSuggestionsUIEnabled()) {
+        [self showSuggestionsUI];
+      }
+      break;
     default:
       // Unknown commands get sent up the responder chain.
       [super chromeExecuteCommand:sender];
       break;
   }
 }
 
 - (void)closeCurrentTab {
   Tab* currentTab = [_model currentTab];
   NSUInteger tabIndex = [_model indexOfTab:currentTab];
@@ skipping 85 matching lines @@
 
   [_printController dismissAnimated:YES];
   _printController.reset();
   if (_noTabsController.get())
     [_noTabsController dismissToolsMenuPopup];
   else
     [_toolbarController dismissToolsMenuPopup];
   [_contextMenuCoordinator stop];
   [self dismissRateThisAppDialog];
 
+  [_contentSuggestionsCoordinator stop];
+
   if (self.presentedViewController) {
     // Dismisses any other modal controllers that may be present, e.g. Recent
     // Tabs.
     // Note that currently, some controllers like the bookmark ones were already
     // dismissed (in this example in -dismissBookmarkModalControllerAnimated:),
     // but are still reported as the presentedViewController. The result is that
     // this will call -dismissViewControllerAnimated:completion: a second time
     // on it. It is not per se an issue, as it is a no-op. The problem is that
     // in such a case, the completion block is not called.
     // To ensure the completion is called, nil is passed here, and the
@@ skipping 139 matching lines @@
 
 - (void)showQRScanner {
   _qrScannerViewController.reset(
       [[QRScannerViewController alloc] initWithDelegate:_toolbarController]);
   [self presentViewController:[_qrScannerViewController
                                   getViewControllerToPresent]
                      animated:YES
                    completion:nil];
 }
 
+- (void)showSuggestionsUI {
+  if (!_contentSuggestionsCoordinator) {
+    _contentSuggestionsCoordinator.reset([[ContentSuggestionsCoordinator alloc]
+        initWithBaseViewController:self]);
+  }
+  [_contentSuggestionsCoordinator start];
+}
+
 - (void)showNTPPanel:(NewTabPage::PanelIdentifier)panel {
   DCHECK(self.visible || self.dismissingModal);
   GURL url(kChromeUINewTabURL);
   std::string fragment(NewTabPage::FragmentFromIdentifier(panel));
   if (fragment != "") {
     GURL::Replacements replacement;
     replacement.SetRefStr(fragment);
     url = url.ReplaceComponents(replacement);
   }
   Tab* tab = [_model currentTab];
@@ skipping 752 matching lines @@
 
 - (UIView*)voiceSearchButton {
   return _voiceSearchButton;
 }
 
 - (id<LogoAnimationControllerOwner>)logoAnimationControllerOwner {
   return [self currentLogoAnimationControllerOwner];
 }
 
 @end