Replace SystemUIResourceManager with ResourceManager

ui/android/BUILD.gn

 import("//build/config/android/rules.gni")
 
 assert(is_android)
 
 component("android") {
   output_name = "ui_android"
   sources = [
     "resources/resource_manager.cc",
     "resources/resource_manager.h",
     "resources/ui_resource_android.cc",
     "resources/ui_resource_android.h",
+    "resources/ui_resource_client_android.h",
+    "resources/ui_resource_provider.cc",
+    "resources/ui_resource_provider.h",
     "ui_android_export.h",
     "ui_android_jni_registrar.cc",
     "ui_android_jni_registrar.h",
   ]
 
   defines = [ "UI_ANDROID_IMPLEMENTATION" ]
 
   deps = [
     "//cc",
     "//skia",
@@ skipping 102 matching lines @@
 android_library("ui_javatests") {
   DEPRECATED_java_in_dir = "javatests/src"
   testonly = true
   deps = [
     ":ui_java_resources",
     ":ui_java",
     "//base:base_java",
     "//base:base_java_test_support",
   ]
 }
+
+test("ui_android_unittests") {
+  sources = [
+    "resources/resource_manager_unittest.cc",
+    "run_all_unittests.cc",
+  ]
+  deps = [
+    ":android",
+    "//base",
+    "//base/test:test_support",
+    "//cc",
+    "//skia",
+    "//testing/android:native_test_native_code",
+    "//testing/gtest",
+    "//ui/base",
+    "//ui/gfx",
+    "//ui/resources:ui_test_pak",
+  ]
+}
+
+unittest_apk("ui_android_unittests_apk") {
+  deps = [
+    ":ui_android_unittests",
+    ":ui_java",
+  ]
+  unittests_dep = ":ui_android_unittests"
+}