Java versions of BlimpContents[,Observer] and BlimpNavigationController

blimp/client/core/public/BUILD.gn

 # Copyright 2016 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.
 
+if (is_android) {
+  import("//build/config/android/config.gni")
+  import("//build/config/android/rules.gni")
+}
+
 source_set("public") {
   sources = [
     "blimp_contents.h",
     "blimp_contents_observer.h",
     "blimp_navigation_controller.h",
   ]
 
   deps = [
     "//base",
     "//url",
   ]
 }
+
+if (is_android) {
+  android_library("public_java") {
+    java_files = [
+      "android/java/src/org/chromium/blimp/core_public/BlimpContents.java",
+      "android/java/src/org/chromium/blimp/core_public/BlimpContentsObserver.java",
+      "android/java/src/org/chromium/blimp/core_public/BlimpNavigationController.java",
+      "android/java/src/org/chromium/blimp/core_public/EmptyBlimpContentsObserver.java",
+    ]
+  }
+}