Have content/ create and destroy its own threads.

content/test/test_browser_thread.cc

 // Copyright (c) 2011 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/test/test_browser_thread.h"
 
 #include "base/message_loop.h"
 #include "base/threading/thread.h"
 #include "content/browser/browser_thread_impl.h"
 
 namespace content {
 
+// This gives access to set_message_loop().
+class TestBrowserThreadImpl : public BrowserThreadImpl {
+ public:
+  explicit TestBrowserThreadImpl(BrowserThread::ID identifier)
+      : BrowserThreadImpl(identifier) {
+  }
+
+  TestBrowserThreadImpl(BrowserThread::ID identifier,
+                        MessageLoop* message_loop)
+      : BrowserThreadImpl(identifier, message_loop) {
+  }
+
+  virtual ~TestBrowserThreadImpl() {
+    Stop();
+  }
+
+  void set_message_loop(MessageLoop* loop) {
+    Thread::set_message_loop(loop);
+  }
+
+ private:
+  DISALLOW_COPY_AND_ASSIGN(TestBrowserThreadImpl);
+};
+
 TestBrowserThread::TestBrowserThread(BrowserThread::ID identifier)
-    : impl_(new BrowserThreadImpl(identifier)) {
+    : impl_(new TestBrowserThreadImpl(identifier)) {
 }
 
 TestBrowserThread::TestBrowserThread(BrowserThread::ID identifier,
                                      MessageLoop* message_loop)
-    : impl_(new BrowserThreadImpl(identifier, message_loop)) {
+    : impl_(new TestBrowserThreadImpl(identifier, message_loop)) {
 }
 
 TestBrowserThread::~TestBrowserThread() {
   Stop();
 }
 
 bool TestBrowserThread::Start() {
   return impl_->Start();
 }
 
 bool TestBrowserThread::StartIOThread() {
   base::Thread::Options options;
   options.message_loop_type = MessageLoop::TYPE_IO;
   return impl_->StartWithOptions(options);
 }
 
 void TestBrowserThread::Stop() {
   impl_->Stop();
 }
 
 bool TestBrowserThread::IsRunning() {
   return impl_->IsRunning();
 }
 
 base::Thread* TestBrowserThread::DeprecatedGetThreadObject() {
   return impl_.get();
 }
 
+void TestBrowserThread::DeprecatedSetMessageLoop(MessageLoop* loop) {
+  impl_->set_message_loop(loop);
+}
+
 }  // namespace content