Pointer/hover media query support: platform-dependent changes

ui/android/BUILD.gn

 import("//build/config/android/rules.gni")
 
 assert(is_android)
 
 java_cpp_enum("java_enums_srcjar") {
   sources = [
     "../base/page_transition_types.h",
+    "../base/touch/touch_device.h",
     "../base/window_open_disposition.h",
     "../base/android/system_ui_resource_type.h",
     "../base/ime/text_input_type.h",
     "../gfx/android/java_bitmap.h",
   ]
   outputs = [
     "org/chromium/ui/WindowOpenDisposition.java",
     "org/chromium/ui/base/PageTransition.java",
     "org/chromium/ui/base/SystemUIResourceType.java",
+    "org/chromium/ui/base/HoverType.java",
+    "org/chromium/ui/base/PointerType.java",
     "org/chromium/ui/base/ime/TextInputType.java",
     "org/chromium/ui/gfx/BitmapFormat.java",
   ]
 }
 
 java_strings_grd("ui_strings_grd") {
   grd_file = "java/strings/android_ui_strings.grd"
   outputs = [
     "values-am/android_ui_strings.xml",
     "values-ar/android_ui_strings.xml",
@@ skipping 66 matching lines @@
 android_library("ui_javatests") {
   DEPRECATED_java_in_dir = "javatests/src"
   testonly = true
   deps = [
     ":ui_java_resources",
     ":ui_java",
     "//base:base_java",
     "//base:base_java_test_support",
   ]
 }