[android] Make pdfium_unittests work on Android.

BUILD.gn

Index: BUILD.gn
diff --git a/BUILD.gn b/BUILD.gn
index 46768fc1a1e5a48cf21d1a74a6f69882a824824b..8c9b213e20ddb5f2dd2ac7779321afd2293d733d 100644
--- a/BUILD.gn
+++ b/BUILD.gn
@@ -197,6 +197,9 @@ static_library("test_support") {
     "testing/utils/path_service.cpp",
     "testing/utils/path_service.h",
   ]
+  data = [
+    "testing/resources/",
+  ]
   deps = [
     ":pdfium",
     "//testing/gmock",
@@ -1766,7 +1769,6 @@ test("pdfium_unittests") {
   }
   configs += [ ":pdfium_core_config" ]
   if (is_android) {
-    ignore_all_data_deps = true
     use_raw_android_executable = true
   }
 }