Fix include guards of files in src/ios.

ios/public/provider/chrome/browser/spotlight/spotlight_provider.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_SPOTLIGHT_SPOTLIGHT_PROVIDER_H
-#define IOS_PUBLIC_PROVIDER_CHROME_BROWSER_SPOTLIGHT_SPOTLIGHT_PROVIDER_H
+#ifndef IOS_PUBLIC_PROVIDER_CHROME_BROWSER_SPOTLIGHT_SPOTLIGHT_PROVIDER_H_
+#define IOS_PUBLIC_PROVIDER_CHROME_BROWSER_SPOTLIGHT_SPOTLIGHT_PROVIDER_H_
 
 #import <Foundation/Foundation.h>
 
 #import "base/macros.h"
 
 class SpotlightProvider {
  public:
   SpotlightProvider() {}
   virtual ~SpotlightProvider() {}
 
@@ skipping 12 matching lines @@
   // Returns the id for the custom item containing item ID in Spotlight index.
   virtual NSString* GetCustomAttributeItemID();
 
   // Returns additional keywords that are added to all Spotlight items.
   virtual NSArray* GetAdditionalKeywords();
 
  private:
   DISALLOW_COPY_AND_ASSIGN(SpotlightProvider);
 };
 
-#endif  // IOS_PUBLIC_PROVIDER_CHROME_BROWSER_SPOTLIGHT_SPOTLIGHT_PROVIDER_H
+#endif  // IOS_PUBLIC_PROVIDER_CHROME_BROWSER_SPOTLIGHT_SPOTLIGHT_PROVIDER_H_