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

ios/chrome/browser/translate/after_translate_infobar_controller.mm

Index: ios/chrome/browser/translate/after_translate_infobar_controller.mm
diff --git a/ios/chrome/browser/translate/after_translate_infobar_controller.mm b/ios/chrome/browser/translate/after_translate_infobar_controller.mm
index e4d57c1c13d5339850d7abdcef9882de1f6349da..a14bb2a1828281b96f052125aa554366639384c3 100644
--- a/ios/chrome/browser/translate/after_translate_infobar_controller.mm
+++ b/ios/chrome/browser/translate/after_translate_infobar_controller.mm
@@ -4,7 +4,6 @@
 
 #include "ios/chrome/browser/translate/after_translate_infobar_controller.h"
 
-#include "base/mac/scoped_nsobject.h"
 #include "base/strings/sys_string_conversions.h"
 #include "base/strings/utf_string_conversions.h"
 #include "components/strings/grit/components_strings.h"
@@ -15,6 +14,10 @@
 #include "ui/base/l10n/l10n_util.h"
 #include "ui/gfx/image/image.h"
 
+#if !defined(__has_feature) || !__has_feature(objc_arc)
+#error "This file requires ARC support."
+#endif
+
 namespace {
 enum AlwaysTranslateSwitchState {
   ALWAYS_TRANSLATE_SWITCH_NOT_CHANGED,
@@ -40,11 +43,11 @@ enum AlwaysTranslateSwitchState {
 
 - (InfoBarView*)viewForDelegate:(infobars::InfoBarDelegate*)delegate
                           frame:(CGRect)frame {
-  base::scoped_nsobject<InfoBarView> infoBarView;
+  InfoBarView* infoBarView;
   _translateInfoBarDelegate = delegate->AsTranslateInfoBarDelegate();
   DCHECK(_translateInfoBarDelegate);
-  infoBarView.reset(
-      [[InfoBarView alloc] initWithFrame:frame delegate:self.delegate]);
+  infoBarView =
+      [[InfoBarView alloc] initWithFrame:frame delegate:self.delegate];
   // Icon
   gfx::Image icon = _translateInfoBarDelegate->GetIcon();
   if (!icon.IsEmpty())
@@ -68,9 +71,9 @@ enum AlwaysTranslateSwitchState {
   NSString* original = base::SysUTF16ToNSString(stdOriginal);
   NSString* target = base::SysUTF16ToNSString(
       _translateInfoBarDelegate->target_language_name());
-  base::scoped_nsobject<NSString> label(
+  NSString* label =
       [[NSString alloc] initWithFormat:@"%@ %@ %@%@ %@.", label1, original,
-                                       label2, label3, target]);
+                                       label2, label3, target];
   [infoBarView addLabel:label];
   // Close button.
   [infoBarView addCloseButtonWithTag:TranslateInfoBarIOSTag::CLOSE
@@ -98,7 +101,7 @@ enum AlwaysTranslateSwitchState {
                     target:self
                     action:@selector(infoBarSwitchDidPress:)];
   }
-  return [[infoBarView retain] autorelease];
+  return infoBarView;
 }
 
 #pragma mark - Handling of User Events