Plumbs through android supplying multipe touch points

services/native_viewport/BUILD.gn

Index: services/native_viewport/BUILD.gn
diff --git a/services/native_viewport/BUILD.gn b/services/native_viewport/BUILD.gn
index 647a88e002adb06d98fd5a5b75915a9236abc505..5caf763593d6096c9964c5c06d2553451d60f16c 100644
--- a/services/native_viewport/BUILD.gn
+++ b/services/native_viewport/BUILD.gn
@@ -13,7 +13,6 @@ if (is_android) {
     deps = [
       ":lib",
       ":native_viewport_java",
-      ":jni_headers",
     ]
   }
 
@@ -26,6 +25,12 @@ if (is_android) {
     ]
   }
 
+  generate_jar_jni("motionevent_jni_headers") {
+    classes = [ "android/view/MotionEvent.class" ]
+
+    jni_package = "mojo"
+  }
+
   generate_jni("jni_headers") {
     sources = [
       "android/src/org/chromium/mojo/PlatformViewportAndroid.java",
@@ -93,7 +98,10 @@ source_set("lib") {
   ]
 
   if (is_android) {
-    deps += [ ":jni_headers" ]
+    deps += [
+      ":jni_headers",
+      ":motionevent_jni_headers",
+    ]
   }
 
   if (use_x11) {