Use ios_packed_resources_target to depend on packed resources.

Use ios_packed_resources_target as a dependency of //ios/chrome/app
target to select the correct packed resource target.

BUG=653086

Review-Url: https://codereview.chromium.org/2558913005
Cr-Commit-Position: refs/heads/master@{#437791}

ios/chrome/BUILD.gn

@@ -10,13 +10,6 @@ test("ios_chrome_unittests") {
     # Ensure that all unit tests are run.
     "//ios/chrome/test:run_all_unittests",
 
-    # Ensure that packed resources are available (it should be a dependency
-    # of //ios/chrome/app however, Chrome on iOS uses different resources,
-    # so the dependency cannot be added there).
-    # TODO(crbug.com/653086): find a way to fix those dependency as part of
-    # building Chromium for iOS, and then remove the dependency.
-    "//ios/chrome/app/resources:packed_resources",
-
     # Add unit_tests target here.
     "//ios/chrome/app:unit_tests",
     "//ios/chrome/app/application_delegate:unit_tests",

ios/chrome/app/BUILD.gn

@@ -5,6 +5,7 @@
 import("//build/config/ios/rules.gni")
 import("//build/mac/tweak_info_plist.gni")
 import("//ios/build/chrome_build.gni")
+import("//ios/public/provider/chrome/browser/build_config.gni")
 
 source_set("app") {
   sources = [
@@ -19,6 +20,7 @@ source_set("app") {
   deps = [
     ":resources",
     "//base",
+    ios_packed_resources_target,
   ]
 
   libs = [ "Foundation.framework" ]