Migrate chrome_net_benchmarking_message_filter to mojo

chrome/common/net_benchmarking.mojom

Index: chrome/common/net_benchmarking.mojom
diff --git a/chrome/common/net_benchmarking.mojom b/chrome/common/net_benchmarking.mojom
new file mode 100644
index 0000000000000000000000000000000000000000..4d28c20d28782df1f7f682fc35427107d15002e5
--- /dev/null
+++ b/chrome/common/net_benchmarking.mojom
@@ -0,0 +1,25 @@
+// Copyright 2016 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.
+
+module chrome.mojom;
+
+interface NetBenchmarking {
+  // Message sent from the renderer to the browser to request that the browser
+  // close all sockets.  Used for debugging/testing.
+  [Sync]
+  CloseCurrentConnections() => ();
+
+  // Message sent from the renderer to the browser to request that the browser
+  // clear the cache.  Used for debugging/testing.
+  // |result| is the returned status from the operation.
+  ClearCache() => (int32 result);
+
+  // Message sent from the renderer to the browser to request that the browser
+  // clear the host cache.  Used for debugging/testing.
+  ClearHostResolverCache();
+  
+  // Message sent from the renderer to the browser to request that the browser
+  // clear the predictor cache.  Used for debugging/testing.
+  ClearPredictorCache();
+};