Tiimer based phase info generated for mouse wheel events.

content/browser/renderer_host/input/mouse_wheel_event_queue.h

Index: content/browser/renderer_host/input/mouse_wheel_event_queue.h
diff --git a/content/browser/renderer_host/input/mouse_wheel_event_queue.h b/content/browser/renderer_host/input/mouse_wheel_event_queue.h
index 1f465b5051cd8f5d5218b4862d2c09276505f416..d4e9c7e97d47bdae55ee764217e55e8e0e714426 100644
--- a/content/browser/renderer_host/input/mouse_wheel_event_queue.h
+++ b/content/browser/renderer_host/input/mouse_wheel_event_queue.h
@@ -9,7 +9,6 @@
 #include <memory>
 
 #include "base/time/time.h"
-#include "base/timer/timer.h"
 #include "content/browser/renderer_host/event_with_latency_info.h"
 #include "content/common/content_export.h"
 #include "content/common/input/input_event_ack_state.h"
@@ -17,11 +16,6 @@
 
 namespace content {
 
-// The duration in which a ScrollEnd will be sent after the last
-// ScrollUpdate was sent for wheel based gesture scrolls.
-// This value is used only if |enable_scroll_latching_| is true.
-const int64_t kDefaultWheelScrollLatchingTransactionMs = 100;
-
 class QueuedWebMouseWheelEvent;
 
 // Interface with which MouseWheelEventQueue can forward mouse wheel events,
@@ -85,7 +79,6 @@ class CONTENT_EXPORT MouseWheelEventQueue {
                        bool synthetic);
 
   MouseWheelEventQueueClient* client_;
-  base::OneShotTimer scroll_end_timer_;
 
   std::deque<std::unique_ptr<QueuedWebMouseWheelEvent>> wheel_queue_;
   std::unique_ptr<QueuedWebMouseWheelEvent> event_sent_for_gesture_ack_;
@@ -100,7 +93,6 @@ class CONTENT_EXPORT MouseWheelEventQueue {
   // True if the touchpad and wheel scroll latching is enabled.
   bool enable_scroll_latching_;
 
-  int64_t scroll_transaction_ms_;
   blink::WebGestureDevice scrolling_device_;
 
   DISALLOW_COPY_AND_ASSIGN(MouseWheelEventQueue);