[ios] Adds a provider API for AudioSessionController.

ios/public/provider/chrome/browser/test_chrome_browser_provider.mm

 // Copyright 2013 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.
 
 #include "ios/public/provider/chrome/browser/test_chrome_browser_provider.h"
 
 #import <UIKit/UIKit.h>
 
 #include "base/logging.h"
 #include "base/mac/scoped_nsobject.h"
 #include "base/memory/ptr_util.h"
 #include "ios/public/provider/chrome/browser/signin/fake_chrome_identity_service.h"
 #import "ios/public/provider/chrome/browser/test_updatable_resource_provider.h"
+#import "ios/public/provider/chrome/browser/voice/test_voice_search_provider.h"
 #import "ios/public/provider/chrome/browser/voice/voice_search_language.h"
 
 @interface TestStyledTextField : UITextField<TextFieldStyling>
 @end
 
 @implementation TestStyledTextField
 @synthesize placeholderStyle = _placeholderStyle;
 @synthesize textValidator = _textValidator;
 
 - (void)setUseErrorStyling:(BOOL)error {
 }
 @end
 
 namespace ios {
 
 TestChromeBrowserProvider::TestChromeBrowserProvider()
-    : test_updatable_resource_provider_(new TestUpdatableResourceProvider) {}
+    : test_updatable_resource_provider_(new TestUpdatableResourceProvider),

[sdefresne, 2016/10/18 22:19:44]

nit: can you change this to use base::MakeUnique<> here too?

[rohitrao (ping after 24h), 2016/10/18 23:30:44]

Done.

+      test_voice_search_provider_(base::MakeUnique<TestVoiceSearchProvider>()) {
+}
 
 TestChromeBrowserProvider::~TestChromeBrowserProvider() {}
 
 // static
 TestChromeBrowserProvider* TestChromeBrowserProvider::GetTestProvider() {
   ChromeBrowserProvider* provider = GetChromeBrowserProvider();
   DCHECK(provider);
   return static_cast<TestChromeBrowserProvider*>(provider);
 }
 
@@ skipping 13 matching lines @@
 TestChromeBrowserProvider::GetUpdatableResourceProvider() {
   return test_updatable_resource_provider_.get();
 }
 
 UITextField<TextFieldStyling>* TestChromeBrowserProvider::CreateStyledTextField(
     CGRect frame) const {
   return [[TestStyledTextField alloc] initWithFrame:frame];
 }
 
 NSArray* TestChromeBrowserProvider::GetAvailableVoiceSearchLanguages() const {
   base::scoped_nsobject<VoiceSearchLanguage> en([[VoiceSearchLanguage alloc]

[sdefresne, 2016/10/18 22:19:44]

nit: can you change to the following:

  return voice_search_provider_->GetAvailableVoiceSearchLanguages();

[rohitrao (ping after 24h), 2016/10/18 23:30:44]

Done.

           initWithIdentifier:@"en-US"
                  displayName:@"English (US)"
       localizationPreference:nil]);
   return @[ en ];
 }
 
+VoiceSearchProvider* TestChromeBrowserProvider::GetVoiceSearchProvider() {
+  return test_voice_search_provider_.get();
+}
+
 }  // namespace ios