Added experimental Touch.tilt, Touch.tiltDirection support for Android

content/browser/renderer_host/input/web_input_event_util.cc

Index: content/browser/renderer_host/input/web_input_event_util.cc
diff --git a/content/browser/renderer_host/input/web_input_event_util.cc b/content/browser/renderer_host/input/web_input_event_util.cc
index 150d83e8ee55a5024ce24dfefe0bba853db8207c..957ec7c8a83c79ae0e53be712c6b12d069c411be 100644
--- a/content/browser/renderer_host/input/web_input_event_util.cc
+++ b/content/browser/renderer_host/input/web_input_event_util.cc
@@ -9,6 +9,7 @@
 
 #include <cmath>
 
+#include "base/float_util.h"
 #include "base/strings/string_util.h"
 #include "content/common/input/web_touch_event_traits.h"
 #include "ui/events/event_constants.h"
@@ -235,6 +236,14 @@ WebTouchPoint CreateWebTouchPoint(const MotionEvent& event,
     touch.rotationAngle = orientation_deg + 90;
   }
 
+  float tilt = event.GetTilt(pointer_index);
+  touch.tilt = base::IsNaN(tilt) ?
+    std::numeric_limits<float>::quiet_NaN() : (180.f / M_PI * tilt);
+
+  float tilt_direction = event.GetTiltDirection(pointer_index);
+  touch.tiltDirection = base::IsNaN(tilt_direction) ?
+    std::numeric_limits<float>::quiet_NaN() : (180.f / M_PI * tilt_direction);
+
   touch.force = event.GetPressure(pointer_index);
 
   return touch;