[android] Make build_type a singleton.

build/android/pylib/constants.py

Index: build/android/pylib/constants.py
diff --git a/build/android/pylib/constants.py b/build/android/pylib/constants.py
index 6cbe727c93c4a74cb93a051c92ac5130d549324c..dd68f4adbf9b3a3f05c6a40b870803a06fa4550d 100644
--- a/build/android/pylib/constants.py
+++ b/build/android/pylib/constants.py
@@ -83,6 +83,17 @@ ANDROID_NDK_ROOT = os.path.join(DIR_SOURCE_ROOT,
 UPSTREAM_FLAKINESS_SERVER = 'test-results.appspot.com'
 
 
+def GetBuildType():
+  try:
+    return os.environ['CHROMIUM_BUILD_TYPE']

[bulach, 2013/08/16 09:06:57]

drive-by: at least downstream, buildbot passes BUILDTYPE, and I think that's
what other platforms use as well
http://dev.chromium.org/system/app/pages/search?scope=search-site&q=BUILDTYPE

maybe we should use that instead?

+  except KeyError:
+    raise Exception('The build type has not been set')
+
+
+def SetBuildType(build_type):
+  os.environ['CHROMIUM_BUILD_TYPE'] = build_type
+
+
 def _GetADBPath():
   if os.environ.get('ANDROID_SDK_ROOT'):
     return 'adb'