[ObjC ARC] Converts ios/chrome/browser/ui/history:eg_tests to ARC.

ios/public/provider/chrome/browser/signin/fake_chrome_identity_service.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_PUBLIC_PROVIDER_CHROME_BROWSER_SIGNIN_FAKE_CHROME_IDENTITY_SERVICE_H_
 #define IOS_PUBLIC_PROVIDER_CHROME_BROWSER_SIGNIN_FAKE_CHROME_IDENTITY_SERVICE_H_
 
 #include "ios/public/provider/chrome/browser/signin/chrome_identity_service.h"
 
 #include "base/mac/scoped_nsobject.h"
@@ skipping 34 matching lines @@
   MOCK_METHOD5(GetAccessToken,
                void(ChromeIdentity* identity,
                     const std::string& client_id,
                     const std::string& client_secret,
                     const std::set<std::string>& scopes,
                     const ios::AccessTokenCallback& callback));
 
   MOCK_METHOD2(GetAvatarForIdentity,
                void(ChromeIdentity* identity, GetAvatarCallback callback));
 
-  MOCK_METHOD1(GetCachedAvatarForIdentity, UIImage*(ChromeIdentity* identity));
+  virtual UIImage* GetCachedAvatarForIdentity(

[marq (ping after 24h), 2017/02/03 14:26:14]

Add a comment explaining why this can't be mocked like the other methods.

[stkhapugin, 2017/02/03 15:49:07]

I actually made a separate CL where I've addressed this. 

+      ChromeIdentity* identity) override;
 
   MOCK_METHOD2(GetHostedDomainForIdentity,
                void(ChromeIdentity* identity,
                     GetHostedDomainCallback callback));
 
   MOCK_METHOD1(GetMDMDeviceStatus,
                ios::MDMDeviceStatus(NSDictionary* user_info));
 
   MOCK_METHOD3(HandleMDMNotification,
                bool(ChromeIdentity* identity,
                     NSDictionary* user_info,
                     ios::MDMStatusCallback callback));
 
   // Sets up the mock methods for integration tests.
   void SetUpForIntegrationTests();
 
   // Adds the identities given their name.
   void AddIdentities(NSArray* identitiesNames);
 
   // Adds |identity| to the available identities.
   void AddIdentity(ChromeIdentity* identity);
 
  private:
   base::scoped_nsobject<NSMutableArray> identities_;
 };
 
 }  // namespace ios
 
 #endif  // IOS_PUBLIC_PROVIDER_CHROME_BROWSER_SIGNIN_FAKE_CHROME_IDENTITY_SERVICE_H_