Remove iOS conditions in content/ build files.

content/app/BUILD.gn

Index: content/app/BUILD.gn
diff --git a/content/app/BUILD.gn b/content/app/BUILD.gn
index 6d4514bc2e7f09947127c65a8e23e8f56e7dad55..abe8a752254fe499c7fa39ff40e6e797edbacbde 100644
--- a/content/app/BUILD.gn
+++ b/content/app/BUILD.gn
@@ -31,6 +31,8 @@ content_app_deps = [
   "//content/public/common:common_sources",
   "//content/public/common:mojo_bindings",
   "//crypto",
+  "//mojo/shell/public/interfaces",
+  "//mojo/edk/system",
   "//ui/base",
   "//ui/gfx",
   "//ui/gfx/geometry",
@@ -50,19 +52,6 @@ if (is_win) {
   ]
 }
 
-if (is_ios) {
-  content_app_sources -= [
-    "content_main.cc",
-    "mojo/mojo_init.cc",
-    "mojo/mojo_init.h",
-  ]
-} else {
-  content_app_deps += [
-    "//mojo/shell/public/interfaces",
-    "//mojo/edk/system",
-  ]
-}
-
 content_app_extra_configs = [
   "//build/config/compiler:wexit_time_destructors",
   "//content:content_implementation",