Use process/control messages (instead of RVH messages) for layout tests.

content/shell/renderer/layout_test/blink_test_runner.cc

 // Copyright (c) 2012 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/layout_test/blink_test_runner.h"
 
 #include <stddef.h>
 
 #include <algorithm>
 #include <clocale>
@@ skipping 272 matching lines @@
 void BlinkTestRunner::SetDeviceMotionData(const WebDeviceMotionData& data) {
   SetMockDeviceMotionData(data);
 }
 
 void BlinkTestRunner::SetDeviceOrientationData(
     const WebDeviceOrientationData& data) {
   SetMockDeviceOrientationData(data);
 }
 
 void BlinkTestRunner::PrintMessage(const std::string& message) {
-  Send(new ShellViewHostMsg_PrintMessage(routing_id(), message));
+  RenderThread::Get()->Send(new LayoutTestHostMsg_PrintMessage(message));
 }
 
 void BlinkTestRunner::PostTask(blink::WebTaskRunner::Task* task) {
   Platform::current()->currentThread()->getWebTaskRunner()->postTask(
       BLINK_FROM_HERE, task);
 }
 
 void BlinkTestRunner::PostDelayedTask(blink::WebTaskRunner::Task* task,
                                       long long ms) {
   Platform::current()->currentThread()->getWebTaskRunner()->postDelayedTask(
@@ skipping 713 matching lines @@
 void BlinkTestRunner::ReportLeakDetectionResult(
     const LeakDetectionResult& report) {
   Send(new ShellViewHostMsg_LeakDetectionDone(routing_id(), report));
 }
 
 void BlinkTestRunner::OnDestruct() {
   delete this;
 }
 
 }  // namespace content