precache: Move the java files into //components/precache/android

components/precache/android/BUILD.gn

 # Copyright 2015 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/config/android/rules.gni")
 
-assert(is_android)
-
-android_library("android_swipe_refresh_java") {
+# GYP: //components/precache.gypi:precache_java
+android_library("precache_java") {
+  deps = [
+    "//base:base_java",
+  ]
   DEPRECATED_java_in_dir = "java/src"
-  deps = [
-    "//third_party/android_tools:android_support_v4_java",
-  ]
 }