[iOS][Credential-Provider] ObjC++

Change files from cpp to objc++.
CredentialProviderService will use Objective-C classes, and needs to be
converted to Objective-C++ instead of C++.

Bug: 1066803
Change-Id: Ibd74a815177cb05b84bf05ee423ad3342c02a53d
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/2139652
Commit-Queue: Javier Ernesto Flores Robles <javierrobles@chromium.org>
Reviewed-by: Sylvain Defresne <sdefresne@chromium.org>
Auto-Submit: Javier Ernesto Flores Robles <javierrobles@chromium.org>
Cr-Commit-Position: refs/heads/master@{#757036}

ios/chrome/browser/credential_provider/BUILD.gn

@@ -11,10 +11,10 @@ source_set("credential_provider") {
   sources = [
     "archivable_credential+password_form.h",
     "archivable_credential+password_form.mm",
-    "credential_provider_service.cc",
     "credential_provider_service.h",
-    "credential_provider_service_factory.cc",
+    "credential_provider_service.mm",
     "credential_provider_service_factory.h",
+    "credential_provider_service_factory.mm",
     "credential_provider_support.cc",
     "credential_provider_support.h",
   ]
@@ -46,7 +46,7 @@ source_set("unit_tests") {
   testonly = true
   sources = [
     "archivable_credential+password_form_unittest.mm",
-    "credential_provider_service_unittest.cc",
+    "credential_provider_service_unittest.mm",
   ]
   deps = [
     ":credential_provider",

ios/chrome/browser/credential_provider/credential_provider_service.cc → ios/chrome/browser/credential_provider/credential_provider_service.mm

@@ -9,6 +9,10 @@
 #include "base/threading/sequenced_task_runner_handle.h"
 #include "build/build_config.h"
 
+#if !defined(__has_feature) || !__has_feature(objc_arc)
+#error "This file requires ARC support."
+#endif
+
 CredentialProviderService::CredentialProviderService(
     scoped_refptr<password_manager::PasswordStore> password_store)
     : password_store_(password_store) {}

ios/chrome/browser/credential_provider/credential_provider_service_factory.cc → ios/chrome/browser/credential_provider/credential_provider_service_factory.mm

@@ -10,6 +10,10 @@
 #include "ios/chrome/browser/credential_provider/credential_provider_service.h"
 #include "ios/chrome/browser/passwords/ios_chrome_password_store_factory.h"
 
+#if !defined(__has_feature) || !__has_feature(objc_arc)
+#error "This file requires ARC support."
+#endif
+
 // static
 CredentialProviderService* CredentialProviderServiceFactory::GetForBrowserState(
     ChromeBrowserState* browser_state) {

ios/chrome/browser/credential_provider/credential_provider_service_unittest.cc → ios/chrome/browser/credential_provider/credential_provider_service_unittest.mm

@@ -5,13 +5,17 @@
 #include "ios/chrome/browser/credential_provider/credential_provider_service.h"
 
 #include "components/password_manager/core/browser/test_password_store.h"
-#include "testing/gtest/include/gtest/gtest.h"
+#include "testing/platform_test.h"
+
+#if !defined(__has_feature) || !__has_feature(objc_arc)
+#error "This file requires ARC support."
+#endif
 
 namespace {
 
 using password_manager::TestPasswordStore;
 
-class CredentialProviderServiceTest : public testing::Test {
+class CredentialProviderServiceTest : public PlatformTest {
  public:
   CredentialProviderServiceTest() {}