[iOS] Define bundle_data target for //ui unittests

This ensure that the files required by ui_base_unittests and
gfx_unittests application will be copied into the application
bundles on iOS.

BUG=297668

Review URL: https://codereview.chromium.org/1806033002

Cr-Commit-Position: refs/heads/master@{#381682}

ui/base/BUILD.gn

@@ -702,6 +702,16 @@ if (is_android) {
   }
 }
 
+bundle_data("ui_base_unittests_bundle_data") {
+  sources = [
+    "test/data/data_pack_unittest/truncated-header.pak",
+  ]
+  outputs = [
+    "{{bundle_resources_dir}}/" +
+        "{{source_root_relative_dir}}/{{source_file_part}}",
+  ]
+}
+
 # GYP version: ui/base/ui_base_tests.gyp:ui_base_unittests
 test("ui_base_unittests") {
   sources = [
@@ -799,6 +809,7 @@ test("ui_base_unittests") {
   configs += [ "//build/config/compiler:no_size_t_to_int_warning" ]
 
   deps = [
+    ":ui_base_unittests_bundle_data",
     "//base",
     "//base/test:test_support",
     "//net",
@@ -818,14 +829,14 @@ test("ui_base_unittests") {
     "//url",
   ]
 
-  if (is_ios) {
-    # TODO(GYP) lots of iOS-only steps for ui_base_unittests
-  }
-
   if (build_ime) {
     deps += [ "//ui/base/ime" ]
   }
 
+  if (is_ios) {
+    deps += [ "//ui/resources:ui_test_pak_bundle_data" ]
+  }
+
   if (is_win) {
     sources += [
       "dragdrop/os_exchange_data_win_unittest.cc",

ui/gfx/BUILD.gn

@@ -636,6 +636,16 @@ source_set("test_support") {
   }
 }
 
+bundle_data("gfx_unittests_bundle_data") {
+  sources = [
+    "test/data",
+  ]
+  outputs = [
+    "{{bundle_resources_dir}}/" +
+        "{{source_root_relative_dir}}/{{source_file_part}}",
+  ]
+}
+
 test("gfx_unittests") {
   sources = [
     "font_render_params_linux_unittest.cc",
@@ -719,6 +729,7 @@ test("gfx_unittests") {
 
   deps = [
     ":gfx",
+    ":gfx_unittests_bundle_data",
     ":test_support",
     "//base",
     "//base/test:test_support",

ui/resources/BUILD.gn

@@ -71,6 +71,21 @@ if (is_ios || is_mac) {
       ":repack_ui_test_pak",
     ]
   }
+
+  # This needs to be a separate target from ui_test_pak as ui_base_unittests
+  # wants the generate .pak file in the bundle to be named en.lpro/locale.pak
+  # while components_unittests wants it to be named ui_test.pak.
+  bundle_data("ui_test_pak_bundle_data") {
+    public_deps = [
+      ":ui_test_pak",
+    ]
+    sources = [
+      "$root_out_dir/ui_test.pak",
+    ]
+    outputs = [
+      "{{bundle_resources_dir}}/en.lproj/locale.pak",
+    ]
+  }
 } else {
   copy("ui_test_pak") {
     sources = [