Adds link disambiguation popup support to Windows.

ui/keyboard/keyboard_controller.cc

Index: ui/keyboard/keyboard_controller.cc
diff --git a/ui/keyboard/keyboard_controller.cc b/ui/keyboard/keyboard_controller.cc
index f74ff7a612e1b63b927472462f1de31f6665b55f..1dab5a942cd9cfba3c687f74cb84fb442146645f 100644
--- a/ui/keyboard/keyboard_controller.cc
+++ b/ui/keyboard/keyboard_controller.cc
@@ -118,6 +118,8 @@ class KeyboardWindowDelegate : public aura::WindowDelegate {
         keyboard::DefaultKeyboardBoundsFromWindowBounds(bounds_);
     mask->addRect(RectToSkRect(keyboard_bounds));
   }
+  virtual void OnLinkDisambiguationPopupRequested(
+      const gfx::Rect& target_rect, const SkBitmap& zoomed_bitmap) OVERRIDE {}

[cpu_(ooo_6.6-7.5), 2014/07/20 01:54:06]

what happens if the user starts typing, should we dismiss?

If this is missing it should go in a follow up CL, or maybe the is a case in
which we should just eat the keystrokes until the LDP is closed?

[luken, 2014/07/21 18:01:29]

The LDP eats keystrokes, but will close if the user hits the ESC key. Also any
click outside of the LDP will close it. That's what currently happens. I'm open
to suggestions, what do you think should happen? Dismiss on all keystrokes?

 
   gfx::Rect bounds_;
   keyboard::KeyboardControllerProxy* proxy_;