Add --render-results-dir arg to store render results locally.

build/android/test_runner.py

Index: build/android/test_runner.py
diff --git a/build/android/test_runner.py b/build/android/test_runner.py
index 8f169665f0d733fa2a860c506649318991546d74..f9dade68eeb1a19d30822d2f8c70e982489521f1 100755
--- a/build/android/test_runner.py
+++ b/build/android/test_runner.py
@@ -377,6 +377,10 @@ def AddInstrumentationTestOptions(parser):
            'fails or the golden image is missing but to render'
            'the view and carry on.')
   parser.add_argument(
+      '--render-results-directory',
+      dest='render_results_dir',
+      help='Directory to pull render test result images off of the device to.')
+  parser.add_argument(
       '--runtime-deps-path',
       dest='runtime_deps_path', type=os.path.realpath,
       help='Runtime data dependency file from GN.')