Moving gRPC support interfaces out of cronet and into a new component.

build/config/ios/rules.gni

 # Copyright 2015 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.
 
 import("//build/config/ios/ios_sdk.gni")
 import("//build/config/mac/base_rules.gni")
 import("//build/config/mac/symbols.gni")
 
 # Invokes lipo on multiple arch-specific binaries to create a fat binary.
 #
@@ skipping 986 matching lines @@
       _header_map_filename = "$target_gen_dir/$_output_name.headers.hmap"
 
       _compile_headers_map_target = _target_name + "_compile_headers_map"
       action(_compile_headers_map_target) {
         visibility = [ ":$_framework_headers_target" ]
         script = "//build/config/ios/write_framework_hmap.py"
         outputs = [
           _header_map_filename,
         ]
 
+        forward_variables_from(invoker,
+                               [
+                                 "deps",
+                                 "public_deps",
+                                 "testonly",
+                               ])
+
         # The header map generation only wants the list of headers, not all of
         # sources, so filter any non-header source files from "sources". It is
         # less error prone that having the developer duplicate the list of all
         # headers in addition to "sources".
         set_sources_assignment_filter([
                                         "*.c",
                                         "*.cc",
                                         "*.cpp",
                                         "*.m",
                                         "*.mm",
                                       ])
         sources = invoker.sources
         set_sources_assignment_filter([])
 
+        # Add public_headers in case any of these files included in sources.
+        if (defined(invoker.public_headers)) {
+          sources += invoker.public_headers
+        }
+
         args = [
                  rebase_path(_header_map_filename),
                  rebase_path(_framework_root, root_build_dir),
                ] + rebase_path(sources, root_build_dir)
       }
 
       _create_module_map_target = _target_name + "_module_map"
       action(_create_module_map_target) {
         visibility = [ ":$_framework_headers_target" ]
         script = "//build/config/ios/write_framework_modulemap.py"
         outputs = [
           "$_framework_root/Modules/module.modulemap",
         ]
         args = [ rebase_path("$_framework_root", root_build_dir) ]
       }
 
       _copy_public_headers_target = _target_name + "_copy_public_headers"
       copy(_copy_public_headers_target) {
         visibility = [ ":$_framework_headers_target" ]
         sources = _public_headers
         outputs = [
           "$_framework_root/Headers/{{source_file_part}}",
         ]
+        forward_variables_from(invoker,
+                               [
+                                 "deps",
+                                 "public_deps",
+                                 "testonly",
+                               ])
       }
 
       config(_headers_map_config) {
         visibility = [ ":$_target_name" ]
         include_dirs = [ _header_map_filename ]
       }
 
       group(_framework_headers_target) {
         deps = [
           ":$_compile_headers_map_target",
           ":$_copy_public_headers_target",
           ":$_create_module_map_target",
         ]
+        forward_variables_from(invoker, [ "testonly" ])
       }
 
       config(_framework_headers_config) {
         # The link settings are inherited from the framework_bundle config.
         cflags = [
           "-F",
           rebase_path("$root_out_dir/.", root_build_dir),
         ]
       }
     }
@@ skipping 274 matching lines @@
       "-rpath",
       "-Xlinker",
       "@loader_path/Frameworks",
     ]
   }
 }
 
 set_defaults("ios_xctest_test") {
   configs = default_executable_configs
 }