Fix include guards of files in src/ios.

ios/public/provider/chrome/browser/voice/voice_search_controller.h

Index: ios/public/provider/chrome/browser/voice/voice_search_controller.h
diff --git a/ios/public/provider/chrome/browser/voice/voice_search_controller.h b/ios/public/provider/chrome/browser/voice/voice_search_controller.h
index e2dfb0b68db7e42ee19648b7f8e1cdec8403df1f..578ec47ebb1161f721a4b0742499e7b12437a44d 100644
--- a/ios/public/provider/chrome/browser/voice/voice_search_controller.h
+++ b/ios/public/provider/chrome/browser/voice/voice_search_controller.h
@@ -2,8 +2,8 @@
 // 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_VOICE_VOICE_SEARCH_CONTROLLER_IMPL_H_
-#define IOS_PUBLIC_PROVIDER_CHROME_BROWSER_VOICE_VOICE_SEARCH_CONTROLLER_IMPL_H_
+#ifndef IOS_PUBLIC_PROVIDER_CHROME_BROWSER_VOICE_VOICE_SEARCH_CONTROLLER_H_
+#define IOS_PUBLIC_PROVIDER_CHROME_BROWSER_VOICE_VOICE_SEARCH_CONTROLLER_H_
 
 #include "base/memory/ref_counted.h"
 
@@ -57,4 +57,4 @@ class VoiceSearchController
   DISALLOW_COPY_AND_ASSIGN(VoiceSearchController);
 };
 
-#endif  // IOS_PUBLIC_PROVIDER_CHROME_BROWSER_VOICE_VOICE_SEARCH_CONTROLLER_IMPL_H_
+#endif  // IOS_PUBLIC_PROVIDER_CHROME_BROWSER_VOICE_VOICE_SEARCH_CONTROLLER_H_