Add BubbleManager to manage bubbles and ChromeBubbleManager for events.

components/bubble/bubble_delegate.cc

Index: components/bubble/bubble_delegate.cc
diff --git a/ui/base/touch/touch_device_ios.cc b/components/bubble/bubble_delegate.cc
similarity index 63%
copy from ui/base/touch/touch_device_ios.cc
copy to components/bubble/bubble_delegate.cc
index 9f4c712e42b7e71cd2b24e1a51e9cd5447b0e2c8..687d6021b5615eb380c198c53f01fa8035d49fbf 100644
--- a/ui/base/touch/touch_device_ios.cc
+++ b/components/bubble/bubble_delegate.cc
@@ -2,12 +2,8 @@
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
-#include "ui/base/touch/touch_device.h"
+#include "components/bubble/bubble_delegate.h"
 
-namespace ui {
-
-bool IsTouchDevicePresent() {
+bool BubbleDelegate::ShouldClose(BubbleCloseReason reason) {
   return true;
 }
-
-}  // namespace ui