[ObjC ARC] Converts ios/chrome/browser/ui/omnibox:omnibox_internal to ARC.

ios/chrome/browser/ui/omnibox/location_bar_view_ios.h

Index: ios/chrome/browser/ui/omnibox/location_bar_view_ios.h
diff --git a/ios/chrome/browser/ui/omnibox/location_bar_view_ios.h b/ios/chrome/browser/ui/omnibox/location_bar_view_ios.h
index 4f47c1709b8694e7399d9bcc5fee0a9609df32b5..35bef16f61c7d18c5ebab6eca3daf181ac409387 100644
--- a/ios/chrome/browser/ui/omnibox/location_bar_view_ios.h
+++ b/ios/chrome/browser/ui/omnibox/location_bar_view_ios.h
@@ -109,8 +109,10 @@ class LocationBarViewIOS : public WebOmniboxEditController {
   base::scoped_nsobject<UIButton> clear_text_button_;
   std::unique_ptr<OmniboxViewIOS> edit_view_;
   base::scoped_nsobject<OmniboxClearButtonBridge> clear_button_bridge_;

[rohitrao (ping after 24h), 2017/02/24 13:40:31]

We have to use scoped_nsobject here, because it's in a header?

[stkhapugin, 2017/03/01 17:43:58]

yes

-  OmniboxTextFieldIOS* field_;
-  id<LocationBarDelegate> delegate_;
+  __unsafe_unretained OmniboxTextFieldIOS*
+      field_;  // Should be __weak but is included from non-ARC code.

[rohitrao (ping after 24h), 2017/02/24 13:40:31]

Nit: if you move the comment to be on the line above these variables,
clang-format won't line break in a weird way.

[stkhapugin, 2017/03/01 17:43:58]

Done.

+  __unsafe_unretained id<LocationBarDelegate>
+      delegate_;  // Should be __weak but is included from non-ARC code.
   bool is_showing_placeholder_while_collapsed_;
 };