Remove ui::TouchEvent -> blink::WebTouchEvent conversion methods.

content/browser/renderer_host/render_widget_host_view_aura.cc

Index: content/browser/renderer_host/render_widget_host_view_aura.cc
diff --git a/content/browser/renderer_host/render_widget_host_view_aura.cc b/content/browser/renderer_host/render_widget_host_view_aura.cc
index d3d6407ceddec5602e060f4f090bdb6ac21e53a1..c61fb93a04ca7936fe9d981f434853da3e53e2e5 100644
--- a/content/browser/renderer_host/render_widget_host_view_aura.cc
+++ b/content/browser/renderer_host/render_widget_host_view_aura.cc
@@ -27,6 +27,7 @@
 #include "content/browser/renderer_host/compositor_resize_lock_aura.h"
 #include "content/browser/renderer_host/dip_util.h"
 #include "content/browser/renderer_host/input/synthetic_gesture_target_aura.h"
+#include "content/browser/renderer_host/input/web_input_event_util.h"
 #include "content/browser/renderer_host/overscroll_controller.h"
 #include "content/browser/renderer_host/render_view_host_delegate.h"
 #include "content/browser/renderer_host/render_view_host_delegate_view.h"
@@ -230,22 +231,6 @@ BOOL CALLBACK DismissOwnedPopups(HWND window, LPARAM arg) {
 }
 #endif
 
-void UpdateWebTouchEventAfterDispatch(blink::WebTouchEvent* event,
-                                      blink::WebTouchPoint* point) {
-  if (point->state != blink::WebTouchPoint::StateReleased &&
-      point->state != blink::WebTouchPoint::StateCancelled)
-    return;
-
-  const unsigned new_length = event->touchesLength - 1;
-  // Work around a gcc 4.9 bug. crbug.com/392872
-  if (new_length >= event->touchesLengthCap)
-    return;
-
-  for (unsigned i = point - event->touches; i < new_length; ++i)
-    event->touches[i] = event->touches[i + 1];
-  event->touchesLength = new_length;
-}
-
 bool CanRendererHandleEvent(const ui::MouseEvent* event) {
   if (event->type() == ui::ET_MOUSE_CAPTURE_CHANGED)
     return false;
@@ -2033,14 +2018,14 @@ void RenderWidgetHostViewAura::OnTouchEvent(ui::TouchEvent* event) {
     return;
 
   // Update the touch event first.
-  blink::WebTouchPoint* point =
-      UpdateWebTouchEventFromUIEvent(*event, &touch_event_);
-
-  if (!point) {
+  if (!pointer_state_.OnTouch(*event)) {
     event->StopPropagation();
     return;
   }
 
+  touch_event_ = CreateWebTouchEventFromMotionEvent(pointer_state_);
+  pointer_state_.CleanupRemovedTouchPoints(*event);
+
   // Forward the touch event only if a touch point was updated, and
   // there's a touch-event handler in the page, and no other
   // touch-event is in the queue. It is important to always mark
@@ -2053,7 +2038,6 @@ void RenderWidgetHostViewAura::OnTouchEvent(ui::TouchEvent* event) {
     event->DisableSynchronousHandling();
     host_->ForwardTouchEventWithLatencyInfo(touch_event_, *event->latency());
   }
-  UpdateWebTouchEventAfterDispatch(&touch_event_, point);
 }
 
 void RenderWidgetHostViewAura::OnGestureEvent(ui::GestureEvent* event) {