Move cloud_storage to catapult_base.

tools/telemetry/telemetry/core/platform/win_platform_backend.py

Index: tools/telemetry/telemetry/core/platform/win_platform_backend.py
diff --git a/tools/telemetry/telemetry/core/platform/win_platform_backend.py b/tools/telemetry/telemetry/core/platform/win_platform_backend.py
index 938414e87d3a1a52238cae6f992d01393fd3491c..e24f1f8ce1ff630471e6febbc4f6e0abe563217b 100644
--- a/tools/telemetry/telemetry/core/platform/win_platform_backend.py
+++ b/tools/telemetry/telemetry/core/platform/win_platform_backend.py
@@ -17,13 +17,13 @@ import sys
 import time
 import zipfile
 
+from catapult_base import cloud_storage
 from telemetry.core import exceptions
 from telemetry.core.platform import desktop_platform_backend
 from telemetry.core.platform import platform_backend
 from telemetry.core.platform.power_monitor import msr_power_monitor
 from telemetry.core import util
 from telemetry import decorators
-from telemetry.util import cloud_storage
 from telemetry.util import path
 
 try: