Revert "Add IPC benchmarking API to Blink TestRunner"

content/shell/renderer/ipc_echo.cc

Index: content/shell/renderer/ipc_echo.cc
diff --git a/content/shell/renderer/ipc_echo.cc b/content/shell/renderer/ipc_echo.cc
deleted file mode 100644
index a358b9197ddf0ffcad4dbc1d9a62c33ec2c233db..0000000000000000000000000000000000000000
--- a/content/shell/renderer/ipc_echo.cc
+++ /dev/null
@@ -1,39 +0,0 @@
-// Copyright 2014 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.
-
-#include "content/shell/renderer/ipc_echo.h"
-
-#include "base/logging.h"
-#include "content/shell/common/shell_messages.h"
-#include "ipc/ipc_sender.h"
-#include "third_party/WebKit/public/web/WebDOMCustomEvent.h"
-#include "third_party/WebKit/public/web/WebDOMEvent.h"
-#include "third_party/WebKit/public/web/WebSerializedScriptValue.h"
-
-namespace content {
-
-IPCEcho::IPCEcho(blink::WebDocument document,
-                                     IPC::Sender* sender,
-                                     int routing_id)
-    : document_(document), sender_(sender), routing_id_(routing_id),
-      last_echo_id_(0) {
-}
-
-void IPCEcho::RequestEcho(int id, int size) {
-  sender_->Send(new ShellViewHostMsg_EchoPing(
-      routing_id_, id, std::string(size, '*')));
-}
-
-void IPCEcho::DidRespondEcho(int id, int size) {
-  last_echo_id_ = id;
-  last_echo_size_ = size;
-  blink::WebString eventName = blink::WebString::fromUTF8("CustomEvent");
-  blink::WebString eventType = blink::WebString::fromUTF8("pong");
-  blink::WebDOMEvent event = document_.createEvent(eventName);
-  event.to<blink::WebDOMCustomEvent>().initCustomEvent(
-      eventType, false, false, blink::WebSerializedScriptValue());
-  document_.dispatchEvent(event);
-}
-
-}  // namespace content