Introduce security_state::ShouldAlwaysShowIcon() for mobile omnibox calculations.

components/security_state/core/BUILD.gn

 # Copyright 2015 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.
 
 if (is_android) {
   import("//build/config/android/config.gni")
   import("//build/config/android/rules.gni")
 }
 
 static_library("core") {
   sources = [
     "security_state.cc",
     "security_state.h",
+    "security_state_ui.cc",
+    "security_state_ui.h",
     "switches.cc",
     "switches.h",
   ]
 
   deps = [
     "//base",
     "//net",
   ]
 }
 
@@ skipping 10 matching lines @@
   sources = [
     "security_state_unittest.cc",
   ]
 
   deps = [
     ":core",
     "//net:test_support",
     "//testing/gtest",
   ]
 }