[ObjC ARC] Converts components/translate/ios/browser:unit_tests to ARC.

components/translate/ios/browser/translate_controller_unittest.mm

Index: components/translate/ios/browser/translate_controller_unittest.mm
diff --git a/components/translate/ios/browser/translate_controller_unittest.mm b/components/translate/ios/browser/translate_controller_unittest.mm
index 44e55a3f0b656cb3f4e1517d4eebab202c9880e9..7517062abf46325daa69c22d8ab409bbc91d5d67 100644
--- a/components/translate/ios/browser/translate_controller_unittest.mm
+++ b/components/translate/ios/browser/translate_controller_unittest.mm
@@ -13,6 +13,10 @@
 #import "third_party/ocmock/OCMock/OCMock.h"
 #include "url/gurl.h"
 
+#if !defined(__has_feature) || !__has_feature(objc_arc)
+#error "This file requires ARC support."
+#endif
+
 namespace translate {
 
 class TranslateControllerTest : public PlatformTest,
@@ -26,8 +30,8 @@ class TranslateControllerTest : public PlatformTest,
         translation_time_(0),
         on_script_ready_called_(false),
         on_translate_complete_called_(false) {
-    mock_js_translate_manager_.reset(
-        [[OCMockObject niceMockForClass:[JsTranslateManager class]] retain]);
+    mock_js_translate_manager_ =
+        [OCMockObject niceMockForClass:[JsTranslateManager class]];
     translate_controller_.reset(new TranslateController(

[sdefresne, 2017/04/11 07:45:33]

ditto, base::MakeUnique

[stkhapugin, 2017/04/11 15:33:33]

Done.

         test_web_state_.get(), mock_js_translate_manager_));
     translate_controller_->set_observer(this);
@@ -53,7 +57,7 @@ class TranslateControllerTest : public PlatformTest,
   }
 
   std::unique_ptr<web::TestWebState> test_web_state_;
-  base::scoped_nsobject<id> mock_js_translate_manager_;
+  id mock_js_translate_manager_;
   std::unique_ptr<TranslateController> translate_controller_;
   bool success_;
   double ready_time_;