Allow chromium buildtools path to be overriden in the environment.

gclient_utils.py

Index: gclient_utils.py
diff --git a/gclient_utils.py b/gclient_utils.py
index f0d8cec6f49cb99637af1c11ac8e5e54d5ef8bb1..3955534ec4060144617c14e6f8dda697c09681e3 100644
--- a/gclient_utils.py
+++ b/gclient_utils.py
@@ -658,6 +658,14 @@ def GetMacWinOrLinux():
 def GetBuildtoolsPath():
   """Returns the full path to the buildtools directory.
   This is based on the root of the checkout containing the current directory."""
+
+  # Overriding the build tools path by environment is highly unsupported and may
+  # break without warning.  Do not rely on this for anything important.
+  if 'CHROMIUM_BUILDTOOLS_PATH' in os.environ:
+    override = os.environ['CHROMIUM_BUILDTOOLS_PATH']

[iannucci, 2014/08/13 22:56:49]

os.environ.get could also work


val = os.environ.get('thingy')
if val is not None:
  return val

+    if override != None:
+      return override
+
   gclient_root = FindGclientRoot(os.getcwd())
   if not gclient_root:
     # Some projects might not use .gclient. Try to see whether we're in a git