Enable whitelist generation for all builds.

tools/grit/grit_rule.gni

Index: tools/grit/grit_rule.gni
diff --git a/tools/grit/grit_rule.gni b/tools/grit/grit_rule.gni
index b77a24d5e6fb3f2f429bb47c8f71fcea2941774e..22ec4dd3e632751ee84d266f010348896cfa22f8 100644
--- a/tools/grit/grit_rule.gni
+++ b/tools/grit/grit_rule.gni
@@ -84,7 +84,7 @@ import("//build/config/features.gni")
 import("//build/config/ui.gni")
 
 declare_args() {
-  # Enables used resource whitelist generation.
+  # Enables resource whitelist generation.
   enable_resource_whitelist_generation = false

[agrieve, 2016/07/27 01:42:28]

Looks like this used to work for non-android targets, but we're now breaking it
(by removing repack_whitelist param and not adding toolchain filtering to
windows).

I think breaking it is fine since no other platforms use it, but maybe let's add
an:

if (!is_android && enable_resource_whitelist_generation) {
  print("Warning: GN logic for resource whitelists is implemented only for
Android")
}

[estevenson, 2016/07/28 21:56:46]

Done.

 }