Fix touch selection for Athena home card

ui/views/controls/textfield/textfield.cc

 // Copyright (c) 2012 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #include "ui/views/controls/textfield/textfield.h"
 
 #include <string>
 
 #include "base/debug/trace_event.h"
 #include "ui/accessibility/ax_view_state.h"
@@ skipping 905 matching lines @@
         base::Bind(&Textfield::AccessibilitySetValue,
                    weak_ptr_factory_.GetWeakPtr());
   }
 }
 
 void Textfield::OnBoundsChanged(const gfx::Rect& previous_bounds) {
   GetRenderText()->SetDisplayRect(GetContentsBounds());
   OnCaretBoundsChanged();
 }
 
+bool Textfield::NeedsNotificationWhenVisibleBoundsChange() const {
+  return true;
+}
+
+void Textfield::OnVisibleBoundsChanged() {
+  if (touch_selection_controller_)
+    touch_selection_controller_->SelectionChanged();
+}
+
 void Textfield::OnEnabledChanged() {
   View::OnEnabledChanged();
   if (GetInputMethod())
     GetInputMethod()->OnTextInputTypeChanged(this);
   SchedulePaint();
 }
 
 void Textfield::OnPaint(gfx::Canvas* canvas) {
   OnPaintBackground(canvas);
   PaintTextAndCursor(canvas);
@@ skipping 856 matching lines @@
       const size_t length = selection_clipboard_text.length();
       range = gfx::Range(range.start() + length, range.end() + length);
     }
     model_->MoveCursorTo(gfx::SelectionModel(range, affinity));
     UpdateAfterChange(true, true);
     OnAfterUserAction();
   }
 }
 
 }  // namespace views