Reland of Generate Android .isolate files used for test()s

ui/base/BUILD.gn

 # Copyright 2014 The Chromium Authors. All rights reserved.
 # Use of this source code is governed by a BSD-style license that can be
 # found in the LICENSE file.
 
 import("//build/buildflag_header.gni")
 import("//build/config/compiler/compiler.gni")
 import("//build/config/sanitizers/sanitizers.gni")
 import("//build/config/ui.gni")
 import("//testing/test.gni")
 import("//ui/base/ui_features.gni")
@@ skipping 917 matching lines @@
     # instead of depending directly on the non-test .pak files, but depending
     # on ui_test_pak seems to have no effect.
     data += [
       "test/data/data_pack_unittest/truncated-header.pak",
       "$root_out_dir/ui_test.pak",  # TODO(brettw): remove this line.
     ]
     data_deps += [
       "//ui/resources:ui_test_pak",  # TODO(brettw): this does nothing.
       "//third_party/mesa:osmesa",
     ]
+  } else if (is_android) {
+    data += [ "test/data/data_pack_unittest/truncated-header.pak" ]
   }
   if (is_linux || is_win) {
     data += [
       # TODO(brettw): Remove these two lines.
       "$root_out_dir/ui/en-US.pak",
       "$root_gen_dir/ui/resources/ui_resources_100_percent.pak",
     ]
   }
   if (is_mac) {
     data += [ "$root_out_dir/ui_unittests Framework.framework/" ]
 
     if (is_asan && symbol_level == 0) {
       # TODO(crbug.com/330301): make this conditional on mac_strip_release.
       # data += [ "$root_out_dir/ui_base_unittests.dSYM/" ]
     }
   }
 }
 
 if (is_mac) {
   mac_framework_bundle("ui_unittests_framework") {
     testonly = true
     deps = [
       "//ui/resources:ui_test_pak_bundle_data",
     ]
     info_plist = "test/framework-Info.plist"
     output_name = "ui_unittests Framework"
   }
 }