Revert of Enable whitelist generation for all builds.

tools/grit/repack.gni

Index: tools/grit/repack.gni
diff --git a/tools/grit/repack.gni b/tools/grit/repack.gni
index 0f257bb7c4274c1f478ac05e1c3018d37676593b..7dd1520a56263f656b75b12948cb713c09da039b 100644
--- a/tools/grit/repack.gni
+++ b/tools/grit/repack.gni
@@ -2,7 +2,11 @@
 # Use of this source code is governed by a BSD-style license that can be
 # found in the LICENSE file.
 
-import("//tools/grit/grit_rule.gni")
+declare_args() {
+  # Absolute path to a resource whitelist (generated using
+  # //tools/resources/find_used_resources.py).
+  repack_whitelist = ""
+}
 
 # This file defines a template to invoke grit repack in a consistent manner.
 #
@@ -37,11 +41,11 @@
     ]
 
     args = []
-    if (defined(invoker.repack_whitelist)) {
-      inputs += [ invoker.repack_whitelist ]
-      _rebased_whitelist = rebase_path(invoker.repack_whitelist)
-      args += [ "--whitelist=$_rebased_whitelist" ]
-      args += [ "--suppress-removed-key-output" ]
+    if (repack_whitelist != "") {
+      assert(
+          repack_whitelist == rebase_path(repack_whitelist),
+          "repack_whitelist must be an absolute path. Current value is $repack_whitelist")
+      args += [ "--whitelist=$repack_whitelist" ]
     }
     args += [ rebase_path(invoker.output, root_build_dir) ]
     args += rebase_path(invoker.sources, root_build_dir)