[ios] Adds protocols for native app launching

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

Index: ios/public/provider/chrome/browser/test_chrome_browser_provider.mm
diff --git a/ios/public/provider/chrome/browser/test_chrome_browser_provider.mm b/ios/public/provider/chrome/browser/test_chrome_browser_provider.mm
index faa284ea079244a23a91370e9ff2e74f4162adf0..5e3abef1e21fffd933d017b5d42fd3e6d59904f5 100644
--- a/ios/public/provider/chrome/browser/test_chrome_browser_provider.mm
+++ b/ios/public/provider/chrome/browser/test_chrome_browser_provider.mm
@@ -86,4 +86,9 @@ OmahaServiceProvider* TestChromeBrowserProvider::GetOmahaServiceProvider()
   return omaha_service_provider_.get();
 }
 
+id<NativeAppWhitelistManager>
+TestChromeBrowserProvider::GetNativeAppWhitelistManager() const {
+  return nil;
+}
+
 }  // namespace ios