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..303d6d4a9066d21cece0d275395194e1c0d05404 100644
--- a/ui/base/touch/touch_device_win.cc
+++ b/ui/base/touch/touch_device_win.cc
@@ -17,6 +17,28 @@ bool IsTouchDevicePresent() {
       ((value & NID_INTEGRATED_TOUCH) || (value & NID_EXTERNAL_TOUCH));
 }
 
+PointerType GetPrimaryPointerType(int available_pointer_types) {
+  if (available_pointer_types & POINTER_TYPE_FINE)
+    return POINTER_TYPE_FINE;
+  if (available_pointer_types & POINTER_TYPE_COARSE)
+    return POINTER_TYPE_COARSE;
+  DCHECK_EQ(available_pointer_types, POINTER_TYPE_NONE);
+  return POINTER_TYPE_NONE;
+}
+
+int GetAvailableHoverTypes() {
+  int available_hover_types = 0;
+  if (IsTouchDevicePresent())
+    available_hover_types |= HOVER_TYPE_ON_DEMAND;
+  if (GetSystemMetrics(SM_MOUSEPRESENT) != 0)
+    available_hover_types |= HOVER_TYPE_HOVER;
+
+  if (available_hover_types == 0)
+    available_hover_types = HOVER_TYPE_NONE;
+
+  return available_hover_types;
+}
+
 }  // namespace
 
 TouchScreensAvailability GetTouchScreensAvailability() {
@@ -33,6 +55,10 @@ 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())
@@ -47,31 +73,7 @@ int GetAvailablePointerTypes() {
   return available_pointer_types;
 }
 
-PointerType GetPrimaryPointerType() {
-  int available_pointer_types = GetAvailablePointerTypes();
-  if (available_pointer_types & POINTER_TYPE_FINE)
-    return POINTER_TYPE_FINE;
-  if (available_pointer_types & POINTER_TYPE_COARSE)
-    return POINTER_TYPE_COARSE;
-  DCHECK_EQ(available_pointer_types, POINTER_TYPE_NONE);
-  return POINTER_TYPE_NONE;
-}
-
-int GetAvailableHoverTypes() {
-  int available_hover_types = 0;
-  if (IsTouchDevicePresent())
-    available_hover_types |= HOVER_TYPE_ON_DEMAND;
-  if (GetSystemMetrics(SM_MOUSEPRESENT) != 0)
-    available_hover_types |= HOVER_TYPE_HOVER;
-
-  if (available_hover_types == 0)
-    available_hover_types = HOVER_TYPE_NONE;
-
-  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)