Add a MotionEventGeneric implementation

content/browser/renderer_host/input/motion_event_web.cc

Index: content/browser/renderer_host/input/motion_event_web.cc
diff --git a/content/browser/renderer_host/input/motion_event_web.cc b/content/browser/renderer_host/input/motion_event_web.cc
index 0d812b229f81dc37aab1d3c4d1dc5d577c0af316..c85d9c42fc951c6fe2978d3e08a25093b43f9500 100644
--- a/content/browser/renderer_host/input/motion_event_web.cc
+++ b/content/browser/renderer_host/input/motion_event_web.cc
@@ -117,32 +117,6 @@ base::TimeTicks MotionEventWeb::GetEventTime() const {
                                            base::Time::kMicrosecondsPerSecond);
 }
 
-size_t MotionEventWeb::GetHistorySize() const { return 0; }
-
-base::TimeTicks MotionEventWeb::GetHistoricalEventTime(
-    size_t historical_index) const {
-  NOTIMPLEMENTED();
-  return base::TimeTicks();
-}
-
-float MotionEventWeb::GetHistoricalTouchMajor(size_t pointer_index,
-                                              size_t historical_index) const {
-  NOTIMPLEMENTED();
-  return 0.f;
-}
-
-float MotionEventWeb::GetHistoricalX(size_t pointer_index,
-                                     size_t historical_index) const {
-  NOTIMPLEMENTED();
-  return 0.f;
-}
-
-float MotionEventWeb::GetHistoricalY(size_t pointer_index,
-                                     size_t historical_index) const {
-  NOTIMPLEMENTED();
-  return 0.f;
-}
-
 ui::MotionEvent::ToolType MotionEventWeb::GetToolType(
     size_t pointer_index) const {
   NOTIMPLEMENTED();