Optimization: avoid making 4 JNI calls to get touch device attributes.

ui/base/touch/touch_device_win.cc

Index: ui/base/touch/touch_device_win.cc
diff --git a/ui/base/touch/touch_device_win.cc b/ui/base/touch/touch_device_win.cc
index 26554862ef7e8b376699486f02d5bbc5ae5bd427..62fd6a4bd9352daeaf5ddf12966e00c9924a41d9 100644
--- a/ui/base/touch/touch_device_win.cc
+++ b/ui/base/touch/touch_device_win.cc
@@ -33,6 +33,10 @@ int MaxTouchPoints() {
   return GetSystemMetrics(SM_MAXIMUMTOUCHES);
 }
 
+std::pair<int, int> GetAvailablePointerAndHoverTypes() {
+  return std::make_pair(GetAvailablePointerTypes(), GetAvailableHoverTypes());
+}
+
 int GetAvailablePointerTypes() {
   int available_pointer_types = 0;
   if (IsTouchDevicePresent())
@@ -47,8 +51,7 @@ int GetAvailablePointerTypes() {
   return available_pointer_types;
 }
 
-PointerType GetPrimaryPointerType() {
-  int available_pointer_types = GetAvailablePointerTypes();
+PointerType GetPrimaryPointerType(int available_pointer_types) {
   if (available_pointer_types & POINTER_TYPE_FINE)
     return POINTER_TYPE_FINE;
   if (available_pointer_types & POINTER_TYPE_COARSE)
@@ -57,6 +60,10 @@ PointerType GetPrimaryPointerType() {
   return POINTER_TYPE_NONE;
 }
 
+PointerType GetPrimaryPointerType() {
+  return GetPrimaryPointerType(GetAvailablePointerTypes());
+}
+
 int GetAvailableHoverTypes() {
   int available_hover_types = 0;
   if (IsTouchDevicePresent())
@@ -70,8 +77,7 @@ int GetAvailableHoverTypes() {
   return available_hover_types;
 }
 
-HoverType GetPrimaryHoverType() {
-  int available_hover_types = GetAvailableHoverTypes();
+HoverType GetPrimaryHoverType(int available_hover_types) {
   if (available_hover_types & HOVER_TYPE_HOVER)
     return HOVER_TYPE_HOVER;
   if (available_hover_types & HOVER_TYPE_ON_DEMAND)
@@ -80,4 +86,8 @@ HoverType GetPrimaryHoverType() {
   return HOVER_TYPE_NONE;
 }
 
+HoverType GetPrimaryHoverType() {
+  return GetPrimaryHoverType(GetAvailableHoverTypes());
+}
+
 }  // namespace ui