Adding hooks to add the keyboard on screen and be able to dismiss it.

remoting/client/BUILD.gn

 # Copyright 2014 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.
 
 static_library("client") {
   # Disabled the source filters because there are _mac files that need to
   # be compiled on all platforms.
   set_sources_assignment_filter([])
 
   sources = [
@@ skipping 80 matching lines @@
       "audio_player_android.cc",
       "audio_player_android.h",
       "native_device_keymap_android.cc",
     ]
     sources -= [ "native_device_keymap.cc" ]
     libs += [
       "android",
       "OpenSLES",
     ]
   }
+  if (is_ios) {
+    sources += [ "native_device_keymap_ios.cc" ]
+    sources -= [ "native_device_keymap.cc" ]
+  }
 }
 
 source_set("unit_tests") {
   testonly = true
 
   # Disabled the source filters because there are _mac files that need to
   # be compiled on all platforms.
   set_sources_assignment_filter([])
   sources = [
     "audio_player_unittest.cc",
@@ skipping 19 matching lines @@
   ]
 
   deps = [
     ":client",
     "//remoting/proto",
     "//testing/gmock",
     "//testing/gtest",
     "//third_party/webrtc/base:rtc_base_approved",
   ]
 }