[iOS][MF] Create target for shared code

Cq-Include-Trybots: luci.chromium.try:ios-simulator-full-configs;master.tryserver.chromium.mac:ios-simulator-cronet
Change-Id: I8c06b38fa0133336f1a85f73a29b54a44a148505
Reviewed-on: https://chromium-review.googlesource.com/1141953Reviewed-by: Moe Ahmadi <mahmadi@chromium.org>
Commit-Queue: Javier Ernesto Flores Robles <javierrobles@chromium.org>
Cr-Commit-Position: refs/heads/master@{#577554}

ios/chrome/browser/autofill/BUILD.gn

@@ -14,7 +14,6 @@ source_set("autofill") {
     "form_input_accessory_view_controller.h",
     "form_input_accessory_view_controller.mm",
     "form_input_accessory_view_delegate.h",
-    "form_input_accessory_view_provider.h",
     "form_suggestion_controller.h",
     "form_suggestion_controller.mm",
     "form_suggestion_label.h",
@@ -30,6 +29,7 @@ source_set("autofill") {
     "validation_rules_storage_factory.h",
   ]
   deps = [
+    ":autofill_shared",
     "resources:autofill_close",
     "resources:autofill_close_pressed",
     "resources:autofill_keyboard_background",
@@ -72,6 +72,14 @@ source_set("autofill") {
   libs = [ "QuartzCore.framework" ]
 }
 
+source_set("autofill_shared") {
+  configs += [ "//build/config/compiler:enable_arc" ]
+  sources = [
+    "form_input_accessory_view_provider.h",
+  ]
+  libs = [ "UIKit.framework" ]
+}
+
 source_set("autofill_internal") {
   configs += [ "//build/config/compiler:enable_arc" ]
   sources = [