Telemetry: Fix exact_matches in telemetry.test_runner.

content/test/gpu/gpu_tests/memory.py

Index: content/test/gpu/gpu_tests/memory.py
diff --git a/content/test/gpu/gpu_tests/memory.py b/content/test/gpu/gpu_tests/memory.py
index c8eadc426c25257d8e0153dea2f6e44297906c5a..7f712274f34dc31c9c7b86e4c4a4d19fd068c7d2 100644
--- a/content/test/gpu/gpu_tests/memory.py
+++ b/content/test/gpu/gpu_tests/memory.py
@@ -104,6 +104,10 @@ class Memory(benchmark.Benchmark):
   test = _MemoryValidator
   page_set = page_sets.MemoryTestsPageSet
 
+  @classmethod
+  def Name(cls):
+    return "memory_test"
+
   def CreateExpectations(self, page_set):
     return memory_expectations.MemoryExpectations()