Update gpu_tests to use cloud_storage from catapult.

content/test/gpu/gpu_tests/__init__.py

Index: content/test/gpu/gpu_tests/__init__.py
diff --git a/content/test/gpu/gpu_tests/__init__.py b/content/test/gpu/gpu_tests/__init__.py
index 3b4df351fdb2b680fcfc75b209f1cd45b614f550..de02643a82080b48570135c026ba1f8671cbb87b 100644
--- a/content/test/gpu/gpu_tests/__init__.py
+++ b/content/test/gpu/gpu_tests/__init__.py
@@ -6,10 +6,16 @@ import os
 import sys
 
 def Init():
-  telemetry_path = os.path.join(
-    os.path.dirname(__file__),
-    '..', '..', '..', '..', 'tools', 'telemetry')
-  absolute_telemetry_path = os.path.abspath(telemetry_path)
-  sys.path.append(absolute_telemetry_path)
+  chromium_src_dir = os.path.abspath(os.path.join(
+    os.path.dirname(__file__), '..', '..', '..', '..'))
+
+  telemetry_path = os.path.join(chromium_src_dir, 'tools', 'telemetry')
+  if telemetry_path not in sys.path:
+    sys.path.append(telemetry_path)
+
+  catapult_base_path = os.path.join(
+      chromium_src_dir, 'third_party', 'catapult', 'catapult_base')
+  if catapult_base_path not in sys.path:
+    sys.path.append(catapult_base_path)
 
 Init()