Add missing header files to GN files (4 of N)

content/test/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("//build/config/chrome_build.gni")
 import("//build/config/chromecast_build.gni")
 import("//build/config/compiler/compiler.gni")
 import("//build/config/crypto.gni")
 import("//build/config/features.gni")
 import("//build/config/ui.gni")
@@ skipping 847 matching lines @@
     sources += [ "../zygote/zygote_browsertest.cc" ]
   }
 
   if (is_android) {
     if (is_component_build) {
       sources += [ "../browser/android/render_widget_host_connector.cc" ]
     }
     sources += [
       "../browser/accessibility/android_granularity_movement_browsertest.cc",
       "../browser/android/render_widget_host_connector_browsertest.cc",
+      "../browser/android/render_widget_host_connector_browsertest.h",
       "../browser/media/session/audio_focus_delegate_android_browsertest.cc",
       "../shell/android/browsertests_apk/content_browser_tests_jni_onload.cc",
     ]
     sources -= [
       "../browser/media/session/audio_focus_delegate_default_browsertest.cc",
       "../browser/pointer_lock_browsertest.cc",
       "../browser/pointer_lock_browsertest.h",
     ]
     deps += [
       ":content_browsertests_java",
@@ skipping 943 matching lines @@
   if (is_android) {
     deps += [ "//testing/android/native_test:native_test_native_code" ]
   }
 }
 
 group("fuzzers") {
   deps = [
     "//content/test/fuzzer",
   ]
 }