Download arm sysroot as part of gclient hooks

DEPS

Index: DEPS
diff --git a/DEPS b/DEPS
index b47da0459091c7a9658cef75f5df953872cca80e..5a4594b3840644fe436755766ae45ba130236983 100644
--- a/DEPS
+++ b/DEPS
@@ -610,6 +610,14 @@ hooks = [
     ],
   },
   {
+    # Download arm sysroot image to src/arm-sysroot. This image updates
+    # at about the same rate that the chrome build deps change.
+    # This script is a no-op except for linux users who have
+    # target_arch=arm in thier GYP_DEFINES.
+    "pattern": ".",
+    "action": [ "python", "src/build/install-arm-sysroot.py", "--linux-only" ],

[tony, 2012/12/07 01:01:42]

Is this for nacl? Should we just merge this script with
download_nacl_toolchains.py?

[Sam Clegg, 2012/12/07 18:29:37]

No, this is for cross building chrome for arm/linux.  The primary initial user
being the new FYI bot:

http://chromegw/i/chromium.fyi/waterfall?show=Linux%20ARM%20Cross-Compile

+  },
+  {
     # Pull clang on mac. If nothing changed, or on non-mac platforms, this takes
     # zero seconds to run. If something changed, it downloads a prebuilt clang,
     # which takes ~20s, but clang speeds up builds by more than 20s.