Renames SessionChanges and SessionCellData to have a TabSwitcher prefix.

ios/chrome/browser/ui/tab_switcher/tab_switcher_session_cell_data.h

 // 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.
 
 #ifndef IOS_CHROME_BROWSER_UI_TAB_SWITCHER_TAB_SWITCHER_SESSION_CELL_DATA_H_
 #define IOS_CHROME_BROWSER_UI_TAB_SWITCHER_TAB_SWITCHER_SESSION_CELL_DATA_H_
 
 #import <UIKit/UIKit.h>
 
 @class TabSwitcherHeaderView;
 
 enum TabSwitcherSessionCellType {
   kIncognitoSessionCell,
   kOpenTabSessionCell,
   kGenericRemoteSessionCell,
   kPhoneRemoteSessionCell,
   kTabletRemoteSessionCell,
   kLaptopRemoteSessionCell,
 };
 
 // This class hold the data used to configure the content of a
 // TabSwitcherHeaderCell.
-@interface SessionCellData : NSObject
+@interface TabSwitcherSessionCellData : NSObject
 
 // Those two methods are used to create incognito and open tab cell data.
 // Each method create a SessionCellData object on the first call and returns
 // the same instance on further calls.
 + (instancetype)incognitoSessionCellData;
 + (instancetype)openTabSessionCellData;
 + (instancetype)otherDevicesSessionCellData;
 
 - (instancetype)initWithSessionCellType:(TabSwitcherSessionCellType)type;
 
 @property(nonatomic, readonly) TabSwitcherSessionCellType type;
 @property(nonatomic, copy) NSString* title;
 @property(nonatomic, retain) UIImage* image;
 
 @end
 
 #endif  // IOS_CHROME_BROWSER_UI_TAB_SWITCHER_TAB_SWITCHER_SESSION_CELL_DATA_H_