[Chromoting] Add InputInjector and InputInjectorWrapper for easy unittesting

remoting/android/client_java_tmpl.gni

 # 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")
 import("//remoting/remoting_options.gni")
 
 template("remoting_android_client_java_tmpl") {
   android_library(target_name) {
     _java_file_prefix = "//remoting/android/java/src/org/chromium/chromoting"
@@ skipping 12 matching lines @@
       "DesktopView.java",
       "DesktopViewInterface.java",
       "DummyActivityLifecycleListener.java",
       "DummyClientExtension.java",
       "Event.java",
       "FeedbackAnimator.java",
       "FlingAnimationJob.java",
       "HostInfo.java",
       "HostListAdapter.java",
       "HostListManager.java",
+      "InputEventSender.java",
       "InputModeChangedEventParameter.java",
       "InputStrategyInterface.java",
+      "InputStub.java",
       "NavigationMenuAdapter.java",
       "OAuthTokenConsumer.java",
       "PaintEventParameter.java",
       "Preconditions.java",
       "RenderData.java",
       "ScaleEventParameter.java",
       "SessionAuthenticator.java",
       "SessionConnector.java",
       "SimulatedTouchInputStrategy.java",
       "SizeChangedEventParameter.java",
       "SoftInputMethodVisibilityChangedEventParameter.java",
       "SwipePinchDetector.java",
       "TapGestureDetector.java",
       "ThirdPartyTokenFetcher.java",
       "TouchEventParameter.java",
       "TouchInputHandler.java",
-      "TouchInputHandlerInterface.java",
       "TouchInputStrategy.java",
       "TrackpadInputStrategy.java",
       "TapEventParameter.java",
       "TwoPointsEventParameter.java",
       "accountswitcher/AccountSwitcher.java",
       "accountswitcher/AccountSwitcherBase.java",
       "accountswitcher/AccountSwitcherBasic.java",
       "accountswitcher/AccountSwitcherFactory.java",
       "base/OAuthTokenFetcher.java",
       "cardboard/CardboardRenderer.java",
@@ skipping 27 matching lines @@
       "//third_party/android_tools:android_support_v13_java",
       "//third_party/android_tools:android_support_v7_appcompat_java",
       "//third_party/android_tools:android_support_v7_mediarouter_java",
       "//third_party/cardboard-java",
       "//ui/android:ui_java",
     ]
 
     deps += [ invoker.remoting_google_play_services_library ]
   }
 }