telemetry: Add a page set for blink's memory usage measurement

tools/perf/benchmarks/renderer_memory.py

Index: tools/perf/benchmarks/renderer_memory.py
diff --git a/tools/perf/benchmarks/renderer_memory.py b/tools/perf/benchmarks/renderer_memory.py
new file mode 100644
index 0000000000000000000000000000000000000000..364c116165ba01d1f05fd89767b59deb28851ddd
--- /dev/null
+++ b/tools/perf/benchmarks/renderer_memory.py
@@ -0,0 +1,14 @@
+# Copyright 2015 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.
+
+from core import perf_benchmark
+from measurements import renderer_memory
+import page_sets
+
+
+class RendererMemoryBlank(perf_benchmark.PerfBenchmark):
+    """For testing.
+    """
+    test = renderer_memory.RendererMemory
+    page_set = page_sets.BlankPageSet