Add missing .h files to .gn files that have a .cc file next to it in the gn file already.

chrome/browser/ui/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/chromecast_build.gni")
 import("//build/config/crypto.gni")
 import("//build/config/features.gni")
 import("//build/config/ui.gni")
 import("//build/split_static_library.gni")
 import("//chrome/common/features.gni")
@@ skipping 915 matching lines @@
       "webui/help/help_ui.cc",
       "webui/help/help_ui.h",
       "webui/help/help_utils_chromeos.cc",
       "webui/help/help_utils_chromeos.h",
       "webui/help/version_updater.h",
       "webui/help/version_updater_chromeos.cc",
       "webui/help/version_updater_chromeos.h",
       "webui/help/version_updater_mac.h",
       "webui/help/version_updater_mac.mm",
       "webui/help/version_updater_win.cc",
+      "webui/help/version_updater_win.h",
       "webui/history_login_handler.cc",
       "webui/history_login_handler.h",
       "webui/identity_internals_ui.cc",
       "webui/identity_internals_ui.h",
       "webui/inspect_ui.cc",
       "webui/inspect_ui.h",
       "webui/md_bookmarks/md_bookmarks_ui.cc",
       "webui/md_bookmarks/md_bookmarks_ui.h",
       "webui/md_downloads/downloads_list_tracker.cc",
       "webui/md_downloads/downloads_list_tracker.h",
@@ skipping 530 matching lines @@
       "views/device_chooser_content_view.h",
       "views/download/download_danger_prompt_views.cc",
       "views/elevation_icon_setter.cc",
       "views/elevation_icon_setter.h",
       "views/exclusive_access_bubble_views.cc",
       "views/exclusive_access_bubble_views.h",
       "views/exclusive_access_bubble_views_context.h",
       "views/extensions/chooser_dialog_view.cc",
       "views/extensions/chooser_dialog_view.h",
       "views/extensions/extension_install_dialog_view.cc",
+      "views/extensions/extension_install_dialog_view.h",
       "views/extensions/extension_keybinding_registry_views.cc",
       "views/extensions/extension_keybinding_registry_views.h",
       "views/frame/native_widget_mac_frameless_nswindow.h",
       "views/frame/native_widget_mac_frameless_nswindow.mm",
       "views/global_error_bubble_view.cc",
       "views/global_error_bubble_view.h",
       "views/harmony/chrome_typography.cc",
       "views/harmony/chrome_typography.h",
       "views/harmony/harmony_layout_delegate.cc",
       "views/harmony/harmony_layout_delegate.h",
@@ skipping 730 matching lines @@
       "android/infobars/search_geolocation_disclosure_infobar.h",
       "android/infobars/simple_confirm_infobar_builder.cc",
       "android/infobars/simple_confirm_infobar_builder.h",
       "android/infobars/subresource_filter_infobar.cc",
       "android/infobars/subresource_filter_infobar.h",
       "android/infobars/translate_infobar.cc",
       "android/infobars/translate_infobar.h",
       "android/infobars/update_password_infobar.cc",
       "android/infobars/update_password_infobar.h",
       "android/javascript_app_modal_dialog_android.cc",
+      "android/javascript_app_modal_dialog_android.h",
       "android/login_handler_android.cc",
       "android/omnibox/omnibox_url_emphasizer.cc",
       "android/omnibox/omnibox_url_emphasizer.h",
       "android/omnibox/omnibox_view_util.cc",
       "android/omnibox/omnibox_view_util.h",
       "android/page_info/certificate_chain_helper.cc",
       "android/page_info/certificate_chain_helper.h",
       "android/page_info/certificate_viewer_android.cc",
       "android/page_info/certificate_viewer_android.h",
       "android/page_info/connection_info_popup_android.cc",
@@ skipping 826 matching lines @@
       "//google_update",
       "//third_party/iaccessible2",
       "//third_party/isimpledom",
       "//third_party/libphonenumber",
       "//third_party/wtl",
       "//ui/base/ime",
       "//ui/events:dom_keycode_converter",
     ]
     if (!is_chrome_branded) {
       deps -= [ "//google_update" ]
-      sources -= [ "webui/help/version_updater_win.cc" ]
+      sources -= [
+        "webui/help/version_updater_win.cc",
+        "webui/help/version_updater_win.h",
+      ]
       sources += [
         "webui/help/version_updater_basic.cc",
         "webui/help/version_updater_basic.h",
       ]
     }
   } else {  # 'OS!="win"
     # The Cast Linux build sets toolkit_views to false, but many files in this
     # target include views-related files unconditionally, causing `gn check`
     # to fail on this variant. Since this target is only referenced (but not
     # compiled) on this variant, it's okay to add this "incorrect" dependency
@@ skipping 440 matching lines @@
       "test/test_confirm_bubble_model.cc",
       "test/test_confirm_bubble_model.h",
     ]
     deps += [ "//chrome/test:test_support_ui" ]
   }
 
   if (enable_extensions) {
     deps += [ "//extensions/browser" ]
   }
 }