[ios] Adds a provider API for AudioSessionController.

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

Index: ios/public/provider/chrome/browser/test_chrome_browser_provider.h
diff --git a/ios/public/provider/chrome/browser/test_chrome_browser_provider.h b/ios/public/provider/chrome/browser/test_chrome_browser_provider.h
index dffc1f627887e3d5a9ee8f96588160cb734a9e93..2663e7bc03548b37ac75562dc7cf861fb153fe62 100644
--- a/ios/public/provider/chrome/browser/test_chrome_browser_provider.h
+++ b/ios/public/provider/chrome/browser/test_chrome_browser_provider.h
@@ -14,6 +14,7 @@
 namespace ios {
 
 class TestUpdatableResourceProvider;
+class TestVoiceSearchProvider;

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

Remove.

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

Done.

 
 class TestChromeBrowserProvider : public ChromeBrowserProvider {
  public:
@@ -31,11 +32,13 @@ class TestChromeBrowserProvider : public ChromeBrowserProvider {
   UITextField<TextFieldStyling>* CreateStyledTextField(
       CGRect frame) const override NS_RETURNS_RETAINED;
   NSArray* GetAvailableVoiceSearchLanguages() const override;
+  VoiceSearchProvider* GetVoiceSearchProvider() override;
 
  private:
   std::unique_ptr<ChromeIdentityService> chrome_identity_service_;
   std::unique_ptr<TestUpdatableResourceProvider>
       test_updatable_resource_provider_;
+  std::unique_ptr<TestVoiceSearchProvider> test_voice_search_provider_;

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

Use VoiceSearchProvider here too:

  std::unique_ptr<VoiceSearchProvider> voice_search_provider_;

BTW, can you also do this for TestUpdatableResourceProvider too?

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

Done.

 
   DISALLOW_COPY_AND_ASSIGN(TestChromeBrowserProvider);
 };