[Clean Skeleton] Migrate code to clean/

ios/chrome/app/BUILD.gn

Index: ios/chrome/app/BUILD.gn
diff --git a/ios/chrome/app/BUILD.gn b/ios/chrome/app/BUILD.gn
index ac46e1923379cd0bb4d1f145202c86aee3aa2b5b..78fd19498778790c2711402e14f0dcaca8f4cdc5 100644
--- a/ios/chrome/app/BUILD.gn
+++ b/ios/chrome/app/BUILD.gn
@@ -325,83 +325,3 @@ if (ios_enable_share_extension && current_toolchain == default_toolchain) {
     ]
   }
 }
-
-# Clean Skeleton targets.
-ios_app_bundle("chrome_clean_skeleton") {
-  output_name = "CSChromium"
-
-  entitlements_path = "//ios/chrome/app/resources/Chrome.entitlements"
-  info_plist_target = ":info_plist"
-
-  deps = [
-    ":main_clean_skeleton",
-    ":tests_fake_hook",
-  ]
-
-  bundle_deps = [ "//ios/chrome/app/resources" ]
-
-  extra_substitutions = [
-    "CHROMIUM_BUNDLE_ID=$chromium_bundle_id",
-    "CHROMIUM_SHORT_NAME=$chromium_short_name",
-    "CHROMIUM_URL_SCHEME_1=$url_unsecure_scheme",
-    "CHROMIUM_URL_SCHEME_2=$url_secure_scheme",
-    "CHROMIUM_URL_SCHEME_3=$url_x_callback_scheme",
-    "CHROMIUM_URL_SCHEME_4=$url_channel_scheme",
-  ]
-
-  if (ios_encryption_export_compliance_code != "") {
-    extra_substitutions += [ "ENCRYPTION_EXPORT_COMPLIANCE_CODE=" +
-                             ios_encryption_export_compliance_code ]
-  }
-}
-
-source_set("main_clean_skeleton") {
-  sources = [
-    "main.mm",
-  ]
-
-  deps = [
-    ":app_clean_skeleton",
-    ":app_internal",
-    "//base",
-    "//components/crash/core/common",
-    "//ios/chrome/app/startup",
-    "//ios/chrome/browser",
-    "//ios/chrome/browser:browser_internal",
-    "//ios/chrome/browser/crash_report",
-    "//ios/chrome/common",
-    "//third_party/google_toolbox_for_mac",
-  ]
-
-  configs += [ "//build/config/compiler:enable_arc" ]
-}
-
-source_set("application_state_clean_skeleton") {
-  sources = [
-    "application_phase.h",
-    "application_state.h",
-    "application_state.mm",
-    "application_step.h",
-  ]
-
-  configs += [ "//build/config/compiler:enable_arc" ]
-
-  deps = [
-    "//base",
-    "//ios/chrome/browser:browser_clean_skeleton",
-  ]
-}
-
-source_set("app_clean_skeleton") {
-  sources = [
-    "app_delegate.h",
-    "app_delegate.mm",
-  ]
-
-  configs += [ "//build/config/compiler:enable_arc" ]
-
-  deps = [
-    ":application_state_clean_skeleton",
-    "//ios/chrome/app/steps",
-  ]
-}