Add BlimpClientContext and factory with real and dummy implementation

blimp/client/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/ui.gni")
 
 if (is_android) {
   import("//build/config/android/config.gni")
   import("//build/config/android/rules.gni")
 }
@@ skipping 463 matching lines @@
     ]
   }
 
   shared_library("blimp_client_android") {
     deps = [
       ":client",
       ":jni_headers",
       "//base",
       "//blimp/client:compositor",
       "//blimp/client/core",
+      "//blimp/client/public",
       "//blimp/common",
       "//blimp/common/proto",
       "//blimp/net",
       "//components/safe_json/android:safe_json_jni_headers",
       "//components/url_formatter",
       "//components/version_info",
       "//net",
       "//skia",
       "//ui/base/ime:text_input_types",
       "//ui/gfx/geometry",
       "//ui/gl",
       "//url:url",
     ]
 
     sources = [
+      "app/android/blimp_app_jni_registrar.cc",
+      "app/android/blimp_app_jni_registrar.h",
       "app/android/blimp_client_session_android.cc",
       "app/android/blimp_client_session_android.h",
       "app/android/blimp_compositor_manager_android.cc",
       "app/android/blimp_compositor_manager_android.h",
-      "app/android/blimp_jni_registrar.cc",
-      "app/android/blimp_jni_registrar.h",
       "app/android/blimp_library_loader.cc",
       "app/android/blimp_library_loader.h",
       "app/android/blimp_view.cc",
       "app/android/blimp_view.h",
       "app/android/tab_control_feature_android.cc",
       "app/android/tab_control_feature_android.h",
       "app/android/toolbar.cc",
       "app/android/toolbar.h",
       "app/android/web_input_box.cc",
       "app/android/web_input_box.h",
@@ skipping 21 matching lines @@
   instrumentation_test_apk("blimp_test_apk") {
     apk_name = "BlimpTest"
     apk_under_test = ":blimp_apk"
     android_manifest = blimp_test_apk_manifest
     android_manifest_dep = ":blimp_test_apk_manifest"
     deps = [
       ":blimp_test_java",
     ]
   }
 }