Support for ARM NaCl untrusted runtime build.

build/download_nacl_toolchains.py

Index: build/download_nacl_toolchains.py
diff --git a/build/download_nacl_toolchains.py b/build/download_nacl_toolchains.py
index 2fdfa00f37c7fa9f72db6ed79c3c88ca25ae74f2..d3959310834536f6ae135263be32674a72e99e05 100755
--- a/build/download_nacl_toolchains.py
+++ b/build/download_nacl_toolchains.py
@@ -13,6 +13,7 @@ def Main(args):
   # Exit early if disable_nacl=1.
   if 'disable_nacl=1' in os.environ.get('GYP_DEFINES', ''):
     return 0
+
   script_dir = os.path.dirname(os.path.abspath(__file__))
   src_dir = os.path.dirname(script_dir)
   nacl_dir = os.path.join(src_dir, 'native_client')
@@ -34,8 +35,16 @@ def Main(args):
   # gclient sync time for developers, or standard Chrome bots.
   if '--optional-pnacl' in args:
     args.remove('--optional-pnacl')
+    # By default we don't use pNaCl toolchain yet, unless on ARM, where

[jvoung - send to chromium..., 2012/03/26 17:09:55]

s/pNaCl/PNaCl/

+    # there is no other toolchain to build untrusted code at the moment.
+    # So analyze is we're building for ARM, or on SDK buildbot.

[jvoung - send to chromium..., 2012/03/26 17:09:55]

s/analyze is/analyze if/

+    use_pnacl = False
+    if 'target_arch=arm' in os.environ.get('GYP_DEFINES', ''):
+      use_pnacl = True
     buildbot_name = os.environ.get('BUILDBOT_BUILDERNAME', '')
     if buildbot_name.find('pnacl') >= 0 and  buildbot_name.find('sdk') >= 0:
+      use_pncal = True

[jvoung - send to chromium..., 2012/03/26 17:09:55]

s/use_pncal/use_pnacl/

+    if use_pnacl:
       print '\n*** DOWNLOADING PNACL TOOLCHAIN ***\n'
     else:
       args.append('--no-pnacl')
@@ -46,4 +55,3 @@ def Main(args):
 
 if __name__ == '__main__':
   sys.exit(Main(sys.argv[1:]))
-