Revert of Be explicit about forcing TouchSelectionController updates

ui/touch_selection/touch_selection_controller.cc

Index: ui/touch_selection/touch_selection_controller.cc
diff --git a/ui/touch_selection/touch_selection_controller.cc b/ui/touch_selection/touch_selection_controller.cc
index 47ecf5a36413e4ffc1557c681b15fa6c8955a7c8..1c8ceae98b5fe1d7d6508e5a3c254ddf82ba4b9a 100644
--- a/ui/touch_selection/touch_selection_controller.cc
+++ b/ui/touch_selection/touch_selection_controller.cc
@@ -68,14 +68,13 @@
 void TouchSelectionController::OnSelectionBoundsChanged(
     const SelectionBound& start,
     const SelectionBound& end) {
-  if (!force_next_update_ && start == start_ && end_ == end)
+  if (start == start_ && end_ == end)
     return;
 
   start_ = start;
   end_ = end;
   start_orientation_ = ToTouchHandleOrientation(start_.type());
   end_orientation_ = ToTouchHandleOrientation(end_.type());
-  force_next_update_ = false;
 
   if (!activate_selection_automatically_ &&
       !activate_insertion_automatically_) {
@@ -156,7 +155,7 @@
   response_pending_input_event_ = LONG_PRESS;
   ShowSelectionHandlesAutomatically();
   ShowInsertionHandleAutomatically();
-  ForceNextUpdateIfInactive();
+  ResetCachedValuesIfInactive();
 }
 
 void TouchSelectionController::AllowShowingFromCurrentSelection() {
@@ -180,7 +179,7 @@
   ShowInsertionHandleAutomatically();
   if (selection_empty_ && !show_on_tap_for_empty_editable_)
     DeactivateInsertion();
-  ForceNextUpdateIfInactive();
+  ResetCachedValuesIfInactive();
 }
 
 void TouchSelectionController::HideAndDisallowShowingAutomatically() {
@@ -209,7 +208,7 @@
   if (selection_editable_ == editable)
     return;
   selection_editable_ = editable;
-  ForceNextUpdateIfInactive();
+  ResetCachedValuesIfInactive();
   if (!selection_editable_)
     DeactivateInsertion();
 }
@@ -218,7 +217,7 @@
   if (selection_empty_ == empty)
     return;
   selection_empty_ = empty;
-  ForceNextUpdateIfInactive();
+  ResetCachedValuesIfInactive();
 }
 
 bool TouchSelectionController::Animate(base::TimeTicks frame_time) {
@@ -341,14 +340,14 @@
   if (activate_insertion_automatically_)
     return;
   activate_insertion_automatically_ = true;
-  ForceNextUpdateIfInactive();
+  ResetCachedValuesIfInactive();
 }
 
 void TouchSelectionController::ShowSelectionHandlesAutomatically() {
   if (activate_selection_automatically_)
     return;
   activate_selection_automatically_ = true;
-  ForceNextUpdateIfInactive();
+  ResetCachedValuesIfInactive();
 }
 
 void TouchSelectionController::OnInsertionChanged() {
@@ -464,9 +463,13 @@
   client_->OnSelectionEvent(SELECTION_CLEARED);
 }
 
-void TouchSelectionController::ForceNextUpdateIfInactive() {
-  if (active_status_ == INACTIVE)
-    force_next_update_ = true;
+void TouchSelectionController::ResetCachedValuesIfInactive() {
+  if (active_status_ != INACTIVE)
+    return;
+  start_ = SelectionBound();
+  end_ = SelectionBound();
+  start_orientation_ = TouchHandleOrientation::UNDEFINED;
+  end_orientation_ = TouchHandleOrientation::UNDEFINED;
 }
 
 gfx::Vector2dF TouchSelectionController::GetStartLineOffset() const {