Use a qualified path to blink resources, content part.

build/secondary/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 23 matching lines @@
 #       List of strings containing extra command-line flags to pass to Grit.
 #
 #   resource_ids (optional)
 #     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.
 #
+#   use_qualified_include (optional)
+#     If set, output_dir is not added to include_dirs.
+#
 #   deps  (optional)
 #   visibility  (optional)
 #       Normal meaning.
 #
 # Example
 #
 #   grit("my_resources") {
 #     # Source and outputs are required.
 #     source = "myfile.grd"
 #     outputs = [
@@ skipping 186 matching lines @@
   # source set can depend on them. The variable "target_name" will get
   # overwritten inside the innter 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) {
-    include_dirs = [ output_dir ]
+    if (!defined(invoker.use_qualified_include) ||
+        !invoker.use_qualified_include) {
+      include_dirs = [ output_dir ]
+    }
     visibility = target_visibility
   }
 
   grit_custom_target = target_name + "_grit"
   action(grit_custom_target) {
     script = "//tools/grit/grit.py"
     inputs = grit_inputs
     outputs = grit_outputs
     depfile = "$target_out_dir/${target_name}.d"
 
@@ skipping 35 matching lines @@
     direct_dependent_configs = [ ":$grit_config" ]
 
     if (defined(invoker.visibility)) {
       visibility = invoker.visibility
     }
     if (defined(invoker.output_name)) {
       output_name = invoker.output_name
     }
   }
 }