[Telemetry] Enable benchmark runner to list most closely matched input benchmark names.

tools/telemetry/telemetry/benchmark_runner_unittest.py

Index: tools/telemetry/telemetry/benchmark_runner_unittest.py
diff --git a/tools/telemetry/telemetry/benchmark_runner_unittest.py b/tools/telemetry/telemetry/benchmark_runner_unittest.py
index 68fc80606219f7757d898c4db53b357a07c89b2a..e28dcc14dcd39351bd4c5f855dac6f5ee063975d 100644
--- a/tools/telemetry/telemetry/benchmark_runner_unittest.py
+++ b/tools/telemetry/telemetry/benchmark_runner_unittest.py
@@ -27,6 +27,11 @@ class BenchmarkBar(benchmark.Benchmark):
   def Name(cls):
     return 'BarBenchmarkkkkk'
 
+class UnusualBenchmark(benchmark.Benchmark):
+  @classmethod
+  def Name(cls):
+    return 'I have a very unusual name'
+
 
 class BenchmarkRunnerUnittest(unittest.TestCase):
   def setUp(self):
@@ -65,3 +70,20 @@ class BenchmarkRunnerUnittest(unittest.TestCase):
       benchmark_runner.PrintBenchmarkList(
         [BenchmarkFoo, BenchmarkBar], self._mock_possible_browser, self._stream)
       self.assertEquals(expected_printed_stream, self._stream.output_data)
+
+  def testGetMostLikelyMatchedBenchmarks(self):
+    all_benchmarks = [BenchmarkFoo, BenchmarkBar, UnusualBenchmark]
+    self.assertEquals(
+        [BenchmarkFoo, BenchmarkBar],
+        benchmark_runner.GetMostLikelyMatchedBenchmarks(
+            all_benchmarks, 'BenchmarkFooz'))
+
+    self.assertEquals(
+        [BenchmarkBar, BenchmarkFoo],
+        benchmark_runner.GetMostLikelyMatchedBenchmarks(
+            all_benchmarks, 'BarBenchmark'))
+
+    self.assertEquals(
+        [UnusualBenchmark],
+        benchmark_runner.GetMostLikelyMatchedBenchmarks(
+            all_benchmarks, 'unusual'))