[telemetry] Sort imports in Telemetry and its dependents.

tools/telemetry/telemetry/benchmark_unittest.py

Index: tools/telemetry/telemetry/benchmark_unittest.py
diff --git a/tools/telemetry/telemetry/benchmark_unittest.py b/tools/telemetry/telemetry/benchmark_unittest.py
index 2bdcccc8cf198bfbbcd65b8b460a57bf17912bb6..3917d8b6bb5502bed6872a84ab9c2c61f17851f9 100644
--- a/tools/telemetry/telemetry/benchmark_unittest.py
+++ b/tools/telemetry/telemetry/benchmark_unittest.py
@@ -6,11 +6,11 @@ import optparse
 import unittest
 
 from telemetry import benchmark
-from telemetry import page
-from telemetry import user_story
 from telemetry.core import browser_options
+from telemetry import page
 from telemetry.page import page_test
 from telemetry.page import shared_page_state
+from telemetry import user_story
 from telemetry.user_story import android
 from telemetry.user_story import shared_user_story_state
 from telemetry.user_story import user_story_runner