Move the pointerevents directory from web-platform-tests/ to wpt/.

third_party/WebKit/LayoutTests/VirtualTestSuites

 [
   {
     "prefix": "gpu",
     "base": "fast/canvas",
     "args": ["--enable-accelerated-2d-canvas",
              "--disable-display-list-2d-canvas"]
   },
   {
     "prefix": "display_list_2d_canvas",
     "base": "fast/canvas",
@@ skipping 146 matching lines @@
     "base": "fast/events/touch/gesture",
     "args": ["--enable-smooth-scrolling"]
   },
   {
     "prefix": "pointerevent",
     "base": "fast/events",
     "args": ["--enable-blink-features=PointerEvent"]
   },
   {
     "prefix": "pointerevent",
-    "base": "imported/web-platform-tests/pointerevents",
+    "base": "imported/wpt/pointerevents",
     "args": ["--enable-blink-features=PointerEvent"]
   },
   {
     "prefix": "pointerevent",
     "base": "inspector/sources/debugger-breakpoints",
     "args": ["--enable-blink-features=PointerEvent"]
   },
   {
     "prefix": "mediasession",
     "base": "media/mediasession",
@@ skipping 69 matching lines @@
     "prefix": "scalefactor200withzoom",
     "base": "fast/hidpi/static",
     "args": ["--force-device-scale-factor=2", "--enable-use-zoom-for-dsf"]
   },
   {
     "prefix": "documentwriteevaluator",
     "base": "http/tests/preload/document-write",
     "args": ["--enable-blink-features=DocumentWriteEvaluator"]
   }
 ]