[Android] Allow custom ActionMode creation via ContentViewClient

ui/touch_selection/touch_handle.cc

Index: ui/touch_selection/touch_handle.cc
diff --git a/ui/touch_selection/touch_handle.cc b/ui/touch_selection/touch_handle.cc
index 0f28c3fedf8d69068acba4969db54e13cbd60bda..cea93885f51582696204a4f49a0071f65fbe4bdb 100644
--- a/ui/touch_selection/touch_handle.cc
+++ b/ui/touch_selection/touch_handle.cc
@@ -228,6 +228,13 @@ bool TouchHandle::Animate(base::TimeTicks frame_time) {
   return true;
 }
 
+gfx::RectF TouchHandle::GetVisibleBounds() const {
+  if (!is_visible_ || !enabled_)
+    return gfx::RectF();
+
+  return drawable_->GetVisibleBounds();
+}
+
 void TouchHandle::BeginDrag() {
   DCHECK(enabled_);
   if (is_dragging_)