Reduce APK size by disabling WebRTC.

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.
 
 import("//remoting/remoting_srcs.gni")
 
 source_set("client") {
   # Disabled the source filters because there are _mac files that need to
   # be compiled on all platforms.
   set_sources_assignment_filter([])
   sources = rebase_path(remoting_srcs_gypi_values.remoting_client_sources,
                         ".",
                         "//remoting")
   set_sources_assignment_filter(sources_assignment_filter)
 
   configs += [
     "//build/config/compiler:wexit_time_destructors",
     "//remoting:version",
+    "//remoting:webrtc",
   ]
 
   deps = [
     "//remoting/base",
     "//remoting/codec",
     "//remoting/protocol",
     "//third_party/libyuv",
     "//third_party/webrtc/modules/desktop_capture:primitives",
   ]
 
@@ skipping 22 matching lines @@
     "empty_cursor_filter_unittest.cc",
     "key_event_mapper_unittest.cc",
     "normalizing_input_filter_cros_unittest.cc",
     "normalizing_input_filter_mac_unittest.cc",
     "server_log_entry_client_unittest.cc",
     "software_video_renderer_unittest.cc",
     "touch_input_scaler_unittest.cc",
   ]
   set_sources_assignment_filter(sources_assignment_filter)
 
-  configs += [ "//remoting:version" ]
+  configs += [
+    "//remoting:version",
+    "//remoting:webrtc",
+  ]
 
   deps = [
     ":client",
     "//remoting/proto",
     "//testing/gmock",
     "//testing/gtest",
     "//third_party/webrtc",
   ]
 }