gn: Make grit() default to requiring qualified #includes.

tools/grit/grit_rule.gni

 # Copyright 2014 The Chromium Authors. All rights reserved.
 # Use of this source code is governed by a BSD-style license that can be
 # found in the LICENSE file.
 
 # Instantiate grit. This will produce a script target to run grit, and a
 # static library that compiles the .cc files.
 #
 # Parameters
 #
 #   source (required)
@@ skipping 35 matching lines @@
 #       Path to a grit "firstidsfile". Default is
 #       //tools/gritsettings/resource_ids. Set to "" to use the value specified
 #       in the <grit> nodes of the processed files.
 #
 #   output_dir (optional)
 #       Directory for generated files. If you specify this, you will often
 #       want to specify output_name if the target name is not particularly
 #       unique, since this can cause files from multiple grit targets to
 #       overwrite each other.
 #
-#   output_name (optiona)
+#   output_name (optional)
 #       Provide an alternate base name for the generated files, like the .d
 #       files. Normally these are based on the target name and go in the
 #       output_dir, but if multiple targets with the same name end up in
 #       the same output_dir, they can collide.
 #
 #   depfile_dir (optional)
 #       If set, used to store the depfile and corresponding stamp file.
 #       Defaults to output_dir
 #
 #   use_qualified_include (optional)
-#       If set, output_dir is not added to include_dirs.
+#       If set to false, output_dir is added to include_dirs.
 #
 #   configs (optional)
 #       List of additional configs to be applied to the generated target.
 #   deps  (optional)
 #   visibility  (optional)
 #       Normal meaning.
 #
 # Example
 #
 #   grit("my_resources") {
@@ skipping 266 matching lines @@
   # source set can depend on them. The variable "target_name" will get
   # overwritten inside the inner classes so we need to compute it here.
   target_visibility = [ ":$target_name" ]
 
   # The current grit setup makes an file in $output_dir/grit/foo.h that
   # the source code expects to include via "grit/foo.h". It would be nice to
   # change this to including absolute paths relative to the root gen directory
   # (like "mycomponent/foo.h"). This config sets up the include path.
   grit_config = target_name + "_grit_config"
   config(grit_config) {
-    if (!defined(invoker.use_qualified_include) ||
+    if (defined(invoker.use_qualified_include) &&
         !invoker.use_qualified_include) {
       include_dirs = [ output_dir ]
     }
 
     if ((is_linux || is_android) && enable_resource_whitelist_generation) {
       cflags = [
         "-Wunknown-pragmas",
         "-Wno-error=unknown-pragmas",
       ]
     }
@@ skipping 124 matching lines @@
     if (defined(invoker.configs)) {
       configs += invoker.configs
     }
 
     if (defined(invoker.visibility)) {
       visibility = invoker.visibility
     }
     output_name = grit_output_name
   }
 }