Telemetry: Move TimeoutException from util module to exceptions module.

tools/telemetry/telemetry/core/util_unittest.py

Index: tools/telemetry/telemetry/core/util_unittest.py
diff --git a/tools/telemetry/telemetry/core/util_unittest.py b/tools/telemetry/telemetry/core/util_unittest.py
index 15a1aaff4a40c7d39a05bc38dc1c93996d0cc4de..a0b3de22ed5bb1ef8c22529fcd203a2d9f39bd6b 100644
--- a/tools/telemetry/telemetry/core/util_unittest.py
+++ b/tools/telemetry/telemetry/core/util_unittest.py
@@ -6,6 +6,7 @@ import shutil
 import tempfile
 import unittest
 
+from telemetry.core import exceptions
 from telemetry.core import util
 
 
@@ -18,7 +19,8 @@ class TestWait(unittest.TestCase):
   def testTimeout(self):
     def test():
       return False
-    self.assertRaises(util.TimeoutException, lambda: util.WaitFor(test, 0.1))
+    self.assertRaises(exceptions.TimeoutException,
+                      lambda: util.WaitFor(test, 0.1))
 
   def testCallable(self):
     """Test methods and anonymous functions, functions are tested elsewhere."""