Make GestureTextSelector detect its own gestures

ui/events/gesture_detection/gesture_detector.cc

Index: ui/events/gesture_detection/gesture_detector.cc
diff --git a/ui/events/gesture_detection/gesture_detector.cc b/ui/events/gesture_detection/gesture_detector.cc
index 5dc61938b1ae4fff85ff6d8f30a836dd74075f96..c0924488165528b3331f02052b7597d644799a32 100644
--- a/ui/events/gesture_detection/gesture_detector.cc
+++ b/ui/events/gesture_detection/gesture_detector.cc
@@ -10,6 +10,7 @@
 #include <cmath>
 
 #include "base/timer/timer.h"
+#include "ui/events/gesture_detection/gesture_listeners.h"
 #include "ui/events/gesture_detection/motion_event.h"
 
 namespace ui {
@@ -57,62 +58,6 @@ GestureDetector::Config::Config()
 
 GestureDetector::Config::~Config() {}
 
-bool GestureDetector::SimpleGestureListener::OnDown(const MotionEvent& e) {
-  return false;
-}
-
-void GestureDetector::SimpleGestureListener::OnShowPress(const MotionEvent& e) {
-}
-
-bool GestureDetector::SimpleGestureListener::OnSingleTapUp(
-    const MotionEvent& e) {
-  return false;
-}
-
-void GestureDetector::SimpleGestureListener::OnLongPress(const MotionEvent& e) {
-}
-
-bool GestureDetector::SimpleGestureListener::OnScroll(const MotionEvent& e1,
-                                                      const MotionEvent& e2,
-                                                      float distance_x,
-                                                      float distance_y) {
-  return false;
-}
-
-bool GestureDetector::SimpleGestureListener::OnFling(const MotionEvent& e1,
-                                                     const MotionEvent& e2,
-                                                     float velocity_x,
-                                                     float velocity_y) {
-  return false;
-}
-
-bool GestureDetector::SimpleGestureListener::OnSwipe(const MotionEvent& e1,
-                                                     const MotionEvent& e2,
-                                                     float velocity_x,
-                                                     float velocity_y) {
-  return false;
-}
-
-bool GestureDetector::SimpleGestureListener::OnTwoFingerTap(
-    const MotionEvent& e1,
-    const MotionEvent& e2) {
-  return false;
-}
-
-bool GestureDetector::SimpleGestureListener::OnSingleTapConfirmed(
-    const MotionEvent& e) {
-  return false;
-}
-
-bool GestureDetector::SimpleGestureListener::OnDoubleTap(const MotionEvent& e) {
-  return false;
-}
-
-bool GestureDetector::SimpleGestureListener::OnDoubleTapEvent(
-    const MotionEvent& e) {
-  return false;
-}
-
 class GestureDetector::TimeoutGestureHandler {
  public:
   TimeoutGestureHandler(const Config& config, GestureDetector* gesture_detector)
@@ -187,6 +132,7 @@ GestureDetector::GestureDetector(
       down_focus_x_(0),
       down_focus_y_(0),
       longpress_enabled_(true),
+      showpress_enabled_(true),
       swipe_enabled_(false),
       two_finger_tap_enabled_(false) {
   DCHECK(listener_);
@@ -315,7 +261,8 @@ bool GestureDetector::OnTouchEvent(const MotionEvent& ev) {
 
       // Always start the SHOW_PRESS timer before the LONG_PRESS timer to ensure
       // proper timeout ordering.
-      timeout_handler_->StartTimeout(SHOW_PRESS);
+      if (showpress_enabled_)
+        timeout_handler_->StartTimeout(SHOW_PRESS);
       if (longpress_enabled_)
         timeout_handler_->StartTimeout(LONG_PRESS);
       handled |= listener_->OnDown(ev);