Upstream Chrome on iOS source code [5/11].

ios/chrome/browser/ui/main/browser_view_information.h

+// Copyright 2016 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.
+
+#ifndef IOS_CHROME_BROWSER_UI_MAIN_BROWSER_VIEW_INFORMATION_H_
+#define IOS_CHROME_BROWSER_UI_MAIN_BROWSER_VIEW_INFORMATION_H_
+
+#import <Foundation/Foundation.h>
+
+@class BrowserViewController;
+@class TabModel;
+
+namespace ios {
+class ChromeBrowserState;
+}
+
+// Information about the Browser View, controllers and tab model.
+@protocol BrowserViewInformation<NSObject>
+
+// The normal (non-OTR) BrowserViewController
+@property(nonatomic, retain) BrowserViewController* mainBVC;
+// The normal (non-OTR) TabModel corresponding to mainBVC.
+@property(nonatomic, retain) TabModel* mainTabModel;
+// The OTR BrowserViewController.
+@property(nonatomic, retain) BrowserViewController* otrBVC;
+// The OTR TabModel corresponding to otrBVC.
+@property(nonatomic, retain) TabModel* otrTabModel;
+// The BrowserViewController that is currently being used (one of mainBVC or
+// otrBVC). The other, if present, is in suspended mode.
+@property(nonatomic, assign) BrowserViewController* currentBVC;
+
+// Halts all tabs from all TabModels.
+- (void)haltAllTabs;
+
+// Returns the browser state corresponding to the current browser view.
+- (ios::ChromeBrowserState*)currentBrowserState;
+
+// Returns the tab model corresponding to the current browser view.
+- (TabModel*)currentTabModel;
+
+// Clean up the device sharing manager.
+- (void)cleanDeviceSharingManager;
+
+@end
+
+#endif  // IOS_CHROME_BROWSER_UI_MAIN_BROWSER_VIEW_INFORMATION_H_