depot_tools: expose paths to presubmit_support.py and upload_to_google_storage.py

recipe_modules/depot_tools/api.py

Index: recipe_modules/depot_tools/api.py
diff --git a/recipe_modules/depot_tools/api.py b/recipe_modules/depot_tools/api.py
index 53b7a22432490a662aa812c748351f5d0eaf94bc..68b2bbdf2ced9382ed8d7d945b4bef422ab0dc42 100644
--- a/recipe_modules/depot_tools/api.py
+++ b/recipe_modules/depot_tools/api.py
@@ -10,6 +10,10 @@ class DepotToolsApi(recipe_api.RecipeApi):
     return self.package_repo_resource('download_from_google_storage.py')
 
   @property
+  def upload_to_google_storage_path(self):
+    return self.package_repo_resource('upload_to_google_storage.py')
+
+  @property
   def cros_path(self):
     return self.package_repo_resource('cros')