Add a new gyp flag to enable resource whitelist generation.

BUG=338759
NOTRY=true

Review URL: https://codereview.chromium.org/184783005

git-svn-id: svn://svn.chromium.org/chrome/trunk/src@255710 0039d316-1c4b-4281-b951-d872f2087c98

build/common.gypi

@@ -453,6 +453,9 @@
       # Enable the task manager by default.
       'enable_task_manager%': 1,
 
+      # Enables used resource whitelist generation; disabled by default.
+      'enable_resource_whitelist_generation%': 0,
+
       # Enable FTP support by default.
       'disable_ftp_support%': 0,
 
@@ -921,6 +924,7 @@
     'chroot_cmd%': '<(chroot_cmd)',
     'system_libdir%': '<(system_libdir)',
     'component%': '<(component)',
+    'enable_resource_whitelist_generation%': '<(enable_resource_whitelist_generation)',
     'use_titlecase_in_grd_files%': '<(use_titlecase_in_grd_files)',
     'use_third_party_translations%': '<(use_third_party_translations)',
     'remoting%': '<(remoting)',
@@ -1827,6 +1831,9 @@
       ['notifications==1', {
         'grit_defines': ['-D', 'enable_notifications'],
       }],
+      ['enable_resource_whitelist_generation==1', {
+        'grit_rc_header_format': ['-h', '#define {textual_id} _Pragma("{textual_id}") {numeric_id}'],
+      }],
       ['clang_use_chrome_plugins==1 and OS!="win"', {
         'clang_chrome_plugins_flags': [
           '<!@(<(DEPTH)/tools/clang/scripts/plugin_flags.sh)'
@@ -3909,6 +3916,11 @@
                   '-mllvm -asan-globals=0',
                 ],
               }],
+              ['enable_resource_whitelist_generation==1', {
+                'cflags': [
+                  '-Wunknown-pragmas -Wno-error=unknown-pragmas',
+                ],
+              }],
               ['android_webview_build==0', {
                 'defines': [
                   # The NDK has these things, but doesn't define the constants

build/grit_action.gypi

@@ -20,6 +20,7 @@
     # This makes it possible to add more defines in specific targets,
     # instead of build/common.gypi .
     'grit_additional_defines%': [],
+    'grit_rc_header_format%': [],
   },
   'inputs': [
     '<!@pymod_do_main(grit_info <@(grit_defines) <@(grit_additional_defines) '
@@ -35,6 +36,7 @@
              '-f', '<(grit_resource_ids)',
              '-o', '<(grit_out_dir)',
              '<@(grit_defines)',
-             '<@(grit_additional_defines)' ],
+             '<@(grit_additional_defines)',
+             '<@(grit_rc_header_format)'],
   'message': 'Generating resources from <(grit_grd_file)',
 }