Use shared memory for moving data over BlobChannel Mojo interface.

blimp/net/blob_channel/mock_blob_channel_sender.cc

Index: blimp/net/blob_channel/mock_blob_channel_sender.cc
diff --git a/blimp/common/switches.cc b/blimp/net/blob_channel/mock_blob_channel_sender.cc
similarity index 56%
copy from blimp/common/switches.cc
copy to blimp/net/blob_channel/mock_blob_channel_sender.cc
index 4f1c0567e8c5665d4018043d17219ca9857215fd..7e165d1a773bea423ba65a7aaee85ceeacfa2410 100644
--- a/blimp/common/switches.cc
+++ b/blimp/net/blob_channel/mock_blob_channel_sender.cc
@@ -2,10 +2,11 @@
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
-#include "blimp/common/switches.h"
+#include "blimp/net/blob_channel/mock_blob_channel_sender.h"
 
 namespace blimp {
 
-const char kClientTokenPath[] = "blimp-client-token-path";
+MockBlobChannelSender::MockBlobChannelSender() {}
+MockBlobChannelSender::~MockBlobChannelSender() {}
 
 }  // namespace blimp