Fix the Web Bluetooth chooser when it is used on Chrome apps on non-Mac

ui/views/controls/styled_label.h

Index: ui/views/controls/styled_label.h
diff --git a/ui/views/controls/styled_label.h b/ui/views/controls/styled_label.h
index 503f356ad4fbd979ff2a0b21f3b2ad4b2d556cfa..5ed7abac288e58e90cacf78592ef598eaaef52d2 100644
--- a/ui/views/controls/styled_label.h
+++ b/ui/views/controls/styled_label.h
@@ -68,6 +68,8 @@ class VIEWS_EXPORT StyledLabel : public View, public LinkListener {
   // Sets the text to be displayed, and clears any previous styling.
   void SetText(const base::string16& text);
 
+  void set_listener(StyledLabelListener* listener) { listener_ = listener; }

[sky, 2016/11/09 17:55:48]

I would prefer not to expose this. I think it's moderately error prone. Sorry
for sending you down this path. Can you go back to having ChooserContentView
create the link? I recommend moving construction to the constructor though. And
you can have ChooserContentView own the label (in a unique_ptr, or by value if
you prefer), but call set_owned_by_client.

[juncai, 2016/11/09 20:25:02]

Done.

+
   const base::string16& text() const { return text_; }
 
   // Sets the fonts used by all labels. Can be augemented by styling set by