Remove iOS conditions in content/ build files.

content/public/browser/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("//content/browser/browser.gni")
 import("//build/config/ui.gni")
 
 # See //content/BUILD.gn for how this works.
 group("browser") {
   if (is_component_build) {
     public_deps = [
       "//content",
     ]
   } else {
     public_deps = [
       ":browser_sources",
     ]
   }
 }
 
 source_set("browser_sources") {
   visibility = [ "//content/*" ]
 
-  if (is_ios) {
-    # iOS doesn't get the normal file list and only takes these whitelisted
-    # files.
-    sources = [
-      "browser_main_parts.cc",
-      "content_browser_client.cc",
-      "favicon_status.cc",
-      "navigation_details.cc",
-      "notification_registrar.cc",
-      "page_navigator.cc",
-      "web_ui_controller.cc",
-    ]
-  } else {
-    sources = rebase_path(content_browser_gypi_values.public_browser_sources,
-                          ".",
-                          "//content")
-  }
+  sources = rebase_path(content_browser_gypi_values.public_browser_sources,
+                        ".",
+                        "//content")
 
   if (use_aura) {
     sources -= [ "context_factory.h" ]
   }
 
   configs += [
     "//build/config:precompiled_headers",
     "//content:content_implementation",
   ]
 
@@ skipping 13 matching lines @@
     "//ui/base",
     "//ui/events",
   ]
 
   allow_circular_includes_from = [
     # This target is a pair with content/browser. They always go together and
     # include headers from each other.
     "//content/browser",
   ]
 }