[Android] Add a configurable environment for devil/.

tools/telemetry/catapult_base/dependency_manager/dependency_manager.py

Index: tools/telemetry/catapult_base/dependency_manager/dependency_manager.py
diff --git a/tools/telemetry/catapult_base/dependency_manager/dependency_manager.py b/tools/telemetry/catapult_base/dependency_manager/dependency_manager.py
index 29f389f44249860bda3e42a2808b7b7b21f6db51..485667f1c9e1f34a320e79cb5a4cbefe6b885735 100644
--- a/tools/telemetry/catapult_base/dependency_manager/dependency_manager.py
+++ b/tools/telemetry/catapult_base/dependency_manager/dependency_manager.py
@@ -89,8 +89,6 @@ class DependencyManager(object):
     """
     dependency_info = self._GetDependencyInfo(dependency, platform)
     if not dependency_info:
-      logging.error(

[jbudorick, 2015/09/29 13:28:57]

I removed both of these logging messages because:
 - in the case where this is a problem, the exception should handle the logging
(whether at the point where it's caught or if it propagates all the way through
uncaught)
 - in the case where it isn't a problem, logging will only confuse devs

-          'The dependency_manager was not initialized with the dependency.')
       if not try_support_binaries:
         raise exceptions.NoPathFoundError(dependency, platform)
       # TODO(aiolos): Remove the support_binaries call and always raise
@@ -141,8 +139,6 @@ class DependencyManager(object):
     # system.
     dependency_info = self._GetDependencyInfo(dependency, platform)
     if not dependency_info:
-      logging.error(
-          'The dependency_manager was not initialized with the dependency.')
       if not try_support_binaries:
         raise exceptions.NoPathFoundError(dependency, platform)
       return support_binaries.FindLocallyBuiltPath(dependency)