[ios] Moves find-in-page code out of Tab and into FindTabHelper.

ios/chrome/browser/tabs/tab.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/tabs/tab.h"
 
 #import <CoreLocation/CoreLocation.h>
 #import <UIKit/UIKit.h>
 
 #include <utility>
@@ skipping 45 matching lines @@
 #import "ios/chrome/browser/autofill/form_input_accessory_view_controller.h"
 #import "ios/chrome/browser/autofill/form_suggestion_controller.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/content_settings/host_content_settings_map_factory.h"
 #import "ios/chrome/browser/crash_loop_detection_util.h"
 #include "ios/chrome/browser/experimental_flags.h"
 #include "ios/chrome/browser/favicon/favicon_service_factory.h"
 #import "ios/chrome/browser/find_in_page/find_in_page_controller.h"
+#import "ios/chrome/browser/find_in_page/find_tab_helper.h"
 #import "ios/chrome/browser/geolocation/omnibox_geolocation_controller.h"
 #include "ios/chrome/browser/history/history_service_factory.h"
 #include "ios/chrome/browser/history/top_sites_factory.h"
 #include "ios/chrome/browser/infobars/infobar_manager_impl.h"
 #include "ios/chrome/browser/metrics/ios_chrome_origins_seen_service_factory.h"
 #import "ios/chrome/browser/metrics/tab_usage_recorder.h"
 #import "ios/chrome/browser/native_app_launcher/native_app_navigation_controller.h"
 #import "ios/chrome/browser/passwords/password_controller.h"
 #import "ios/chrome/browser/passwords/passwords_ui_delegate_impl.h"
 #include "ios/chrome/browser/pref_names.h"
@@ skipping 190 matching lines @@
       inputAccessoryViewController_;
 
   // TODO(crbug.com/661665): move the WebContentsObservers into their own
   // container.
   // Handles saving and autofill of passwords.
   base::scoped_nsobject<PasswordController> passwordController_;
 
   // Handles autofill.
   base::scoped_nsobject<AutofillController> autofillController_;
 
-  // Handles find on page.
-  base::scoped_nsobject<FindInPageController> findInPageController_;
-
   // Handles GAL infobar on web pages.
   base::scoped_nsobject<NativeAppNavigationController>
       nativeAppNavigationController_;
 
   // Handles caching and retrieving of snapshots.
   base::scoped_nsobject<SnapshotManager> snapshotManager_;
 
   // Handles retrieving, generating and updating snapshots of CRWWebController's
   // web page.
   base::scoped_nsobject<WebControllerSnapshotHelper>
@@ skipping 241 matching lines @@
     [self.webController setDelegate:self];
 
     NSString* sessionID = self.tabId;
     DCHECK(sessionID);
     snapshotManager_.reset([[SnapshotManager alloc] init]);
 
     webControllerSnapshotHelper_.reset([[WebControllerSnapshotHelper alloc]
         initWithSnapshotManager:snapshotManager_
                             tab:self]);
 
-    findInPageController_.reset([[FindInPageController alloc]
-        initWithWebState:self.webState
-                delegate:self]);
-
     [self initNativeAppNavigationController];
     // IOSChromeSessionTabHelper comes first because it sets up the tab ID, and
     // other helpers may rely on that.
     IOSChromeSessionTabHelper::CreateForWebState(self.webState);
 
     NetworkActivityIndicatorTabHelper::CreateForWebState(self.webState,
                                                          self.tabId);
     IOSChromeSyncedTabDelegate::CreateForWebState(self.webState);
     InfoBarManagerImpl::CreateForWebState(self.webState);
     IOSSecurityStateTabHelper::CreateForWebState(self.webState);
     RepostFormTabHelper::CreateForWebState(self.webState);
     BlockedPopupTabHelper::CreateForWebState(self.webState);
+    FindTabHelper::CreateForWebState(self.webState, self);
 
     if (reading_list::switches::IsReadingListEnabled()) {
       ReadingListModel* model =
           ReadingListModelFactory::GetForBrowserState(browserState_);
       ReadingListWebStateObserver::FromWebState(self.webState, model);
     }
 
     tabInfoBarObserver_.reset(new TabInfoBarObserver(self));
     tabInfoBarObserver_->SetShouldObserveInfoBarManager(true);
 
@@ skipping 608 matching lines @@
 // random time.
 - (void)close {
   self.fullScreenControllerDelegate = nil;
   self.overscrollActionsControllerDelegate = nil;
   self.passKitDialogProvider = nil;
   self.snapshotOverlayProvider = nil;
   self.storeKitLauncher = nil;
 
   [[NSNotificationCenter defaultCenter] removeObserver:self];
 
-  [findInPageController_ detachFromWebState];
-  findInPageController_.reset();
-
   [passwordController_ detach];
   passwordController_.reset();
   tabInfoBarObserver_.reset();
 
   faviconDriverObserverBridge_.reset();
   [openInController_ detachFromWebController];
   openInController_.reset();
   [autofillController_ detachFromWebState];
   [suggestionController_ detachFromWebState];
   if (fullScreenController_)
@@ skipping 482 matching lines @@
   [parentTabModel_ notifyTabChanged:self];
 }
 
 - (void)webState:(web::WebState*)webState
     didCommitNavigationWithDetails:(const web::LoadCommittedDetails&)details {
   DCHECK([self navigationManager]);
   // |webWillAddPendingURL:transition:| is not called for native page loads.
   // TODO(crbug.com/381201): Move this call there once that bug is fixed so that
   // |disableFullScreen| is called only from one place.
   [fullScreenController_ disableFullScreen];
-  [findInPageController_ disableFindInPageWithCompletionHandler:nil];
   GURL lastCommittedURL = webState->GetLastCommittedURL();
   [autoReloadBridge_ loadStartedForURL:lastCommittedURL];
 
   if (isUserNavigationEvent_) {
     [[NSNotificationCenter defaultCenter]
         postNotificationName:kTabModelUserNavigatedNotification
                       object:self];
   }
   if (parentTabModel_) {
     [[NSNotificationCenter defaultCenter]
@@ skipping 465 matching lines @@
         inBackground:NO
             appendTo:kLastTab]);
     [self.view chromeExecuteCommand:command];
   } else {
     base::scoped_nsobject<GenericChromeCommand> chromeCommand(
         [[GenericChromeCommand alloc] initWithTag:IDC_NEW_INCOGNITO_TAB]);
     [self.view chromeExecuteCommand:chromeCommand];
   }
 }
 
-- (FindInPageController*)findInPageController {
-  return findInPageController_;
-}
-
 - (NativeAppNavigationController*)nativeAppNavigationController {
   return nativeAppNavigationController_;
 }
 
 - (void)initNativeAppNavigationController {
   if (browserState_->IsOffTheRecord())
     return;
   DCHECK(!nativeAppNavigationController_);
   nativeAppNavigationController_.reset([[NativeAppNavigationController alloc]
           initWithWebState:self.webState
@@ skipping 52 matching lines @@
   [self.webController setDelegate:self];
   webStateObserver_.reset(
       new web::WebStateObserverBridge(webStateImpl_.get(), self));
   // SessionTabHelper comes first because it sets up the tab ID, and other
   // helpers may rely on that.
   IOSChromeSessionTabHelper::CreateForWebState(webStateImpl_.get());
   IOSChromeSyncedTabDelegate::CreateForWebState(webStateImpl_.get());
   // Start observing the new web controller's InfoBarManager and FaviconDriver.
   [self setShouldObserveInfoBarManager:YES];
   [self setShouldObserveFaviconChanges:YES];
-  findInPageController_.reset();
 }
 
 - (void)replaceExternalAppLauncher:(id)externalAppLauncher {
   externalAppLauncher_.reset([externalAppLauncher retain]);
 }
 
 - (TabModel*)parentTabModel {
   return parentTabModel_;
 }
 
 - (FormInputAccessoryViewController*)inputAccessoryViewController {
   return inputAccessoryViewController_.get();
 }
 
 @end