Separate motion event touch geometry orientation from stylus orientation.

content/browser/renderer_host/input/motion_event_web.cc

 // Copyright 2014 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 // MSVC++ requires this to be set before any other includes to get M_PI.
 #define _USE_MATH_DEFINES
 
 #include "content/browser/renderer_host/input/motion_event_web.h"
 
 #include <cmath>
@@ skipping 108 matching lines @@
   return 2.f * std::max(event_.touches[pointer_index].radiusX,
                         event_.touches[pointer_index].radiusY);
 }
 
 float MotionEventWeb::GetTouchMinor(size_t pointer_index) const {
   DCHECK_LT(pointer_index, GetPointerCount());
   return 2.f * std::min(event_.touches[pointer_index].radiusX,
                         event_.touches[pointer_index].radiusY);
 }
 
-float MotionEventWeb::GetOrientation(size_t pointer_index) const {
+float MotionEventWeb::GetTouchOrientation(size_t pointer_index) const {
   DCHECK_LT(pointer_index, GetPointerCount());
 
   float rotation_angle_rad = event_.touches[pointer_index].rotationAngle
       * M_PI / 180.f;
   DCHECK(0 <= rotation_angle_rad && rotation_angle_rad <= M_PI_2)
       << "Unexpected touch rotation angle";
 
   if (event_.touches[pointer_index].radiusX
       > event_.touches[pointer_index].radiusY) {
     // The case radiusX == radiusY is omitted from here on purpose: for circles,
@@ skipping 24 matching lines @@
 
 int MotionEventWeb::GetButtonState() const {
   return 0;
 }
 
 int MotionEventWeb::GetFlags() const {
   return WebEventModifiersToEventFlags(event_.modifiers);
 }
 
 }  // namespace content