[ios] Adds configuration helper files for voice search.

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

Index: ios/public/provider/chrome/browser/voice/voice_search_language.h
diff --git a/ios/public/provider/chrome/browser/voice/voice_search_language.h b/ios/public/provider/chrome/browser/voice/voice_search_language.h
new file mode 100644
index 0000000000000000000000000000000000000000..27ce8c19c91b05da0c833864a28395c736878a4b
--- /dev/null
+++ b/ios/public/provider/chrome/browser/voice/voice_search_language.h
@@ -0,0 +1,20 @@
+// 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_VOICE_VOICE_SEARCH_LANGUAGE_H_
+#define IOS_PUBLIC_PROVIDER_CHROME_BROWSER_VOICE_VOICE_SEARCH_LANGUAGE_H_
+
+#import <Foundation/Foundation.h>
+
+@interface VoiceSearchLanguage : NSObject

[sdefresne, 2016/10/17 16:12:40]

nit: can you add a initializer that initializes the properties

- (instancetype)initWithIdentifier:(NSString*)identifier
                       displayName:(NSString*)displayName
            localizationPreference:(NSString*)localizationPreference
    NS_DESIGNATED_INITIALIZER;

+
+@property(nonatomic, readwrite, copy) NSString* identifier;
+
+@property(nonatomic, readwrite, copy) NSString* displayName;
+
+@property(nonatomic, readwrite, copy) NSString* localizationPreference;
+
+@end
+
+#endif  // IOS_PUBLIC_PROVIDER_CHROME_BROWSER_VOICE_VOICE_SEARCH_LANGUAGE_H_