Delete TelemetryInfo, MergedTelemetryInfo diagnostics.

tracing/tracing/value/histogram_set_unittest.py

 # Copyright 2017 The Chromium Authors. All rights reserved.
 # Use of this source code is governed by a BSD-style license that can be
 # found in the LICENSE file.
 
 import unittest
 
 from tracing.value import histogram
 from tracing.value import histogram_set
 from tracing.value.diagnostics import diagnostic_ref
 
@@ skipping 42 matching lines @@
     self.assertEqual(len(c2), 1)
     c2 = c2[0]
     self.assertEqual(c2.guid, c.guid)
     self.assertIsNot(c2, c)
 
     self.assertIs(b2, rhm2.Get('y'))
     self.assertIs(c2, rhm2.Get('z'))
 
   def testGetSharedDiagnosticsOfType(self):
     d0 = histogram.GenericSet(['foo'])
-    d1 = histogram.TelemetryInfo()
+    d1 = histogram.DateRange(0)
     hs = histogram_set.HistogramSet()
     hs.AddSharedDiagnostic('generic', d0)
     hs.AddSharedDiagnostic('generic', d1)
     diagnostics = hs.GetSharedDiagnosticsOfType(histogram.GenericSet)
     self.assertEqual(len(diagnostics), 1)
     self.assertIsInstance(diagnostics[0], histogram.GenericSet)
 
   def testImportDicts(self):
     hist = histogram.Histogram('', 'unitless')
     hists = histogram_set.HistogramSet([hist])
@@ skipping 66 matching lines @@
     diag0 = histogram.GenericSet(['shared0'])
     diag1 = histogram.GenericSet(['shared1'])
     hists.AddSharedDiagnostic('generic0', diag0)
 
     guid0 = diag0.guid
     guid1 = diag1.guid
 
     hists.ReplaceSharedDiagnostic(guid0, diag1)
 
     self.assertIsNotNone(hists.LookupDiagnostic(guid1))