Add a hang monitor for Pepper plugins

ppapi/proxy/ppapi_proxy_test.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 "ppapi/proxy/ppapi_proxy_test.h"
 
 #include "base/bind.h"
+#include "base/compiler_specific.h"
 #include "base/message_loop_proxy.h"
 #include "base/observer_list.h"
 #include "ipc/ipc_sync_channel.h"
 #include "ppapi/c/pp_errors.h"
 #include "ppapi/c/private/ppb_proxy_private.h"
 #include "ppapi/proxy/ppapi_messages.h"
 
 namespace ppapi {
 namespace proxy {
 
@@ skipping 215 matching lines @@
 void PluginProxyTest::SetUp() {
   SetUpHarness();
 }
 
 void PluginProxyTest::TearDown() {
   TearDownHarness();
 }
 
 // HostProxyTestHarness --------------------------------------------------------
 
+class HostProxyTestHarness::MockSyncMessageStatusReceiver
+    : public HostDispatcher::SyncMessageStatusReceiver {
+ public:
+  virtual void BeginBlockOnSyncMessage() OVERRIDE {}
+  virtual void EndBlockOnSyncMessage() OVERRIDE {}
+};
+
 HostProxyTestHarness::HostProxyTestHarness()
-    : host_globals_(PpapiGlobals::ForTest()) {
+    : host_globals_(PpapiGlobals::ForTest()),
+      status_receiver_(new MockSyncMessageStatusReceiver) {
 }
 
 HostProxyTestHarness::~HostProxyTestHarness() {
 }
 
 Dispatcher* HostProxyTestHarness::GetDispatcher() {
   return host_dispatcher_.get();
 }
 
 void HostProxyTestHarness::SetUpHarness() {
   // These must be first since the dispatcher set-up uses them.
   PpapiGlobals::SetPpapiGlobalsOnThreadForTest(GetGlobals());
   host_dispatcher_.reset(new HostDispatcher(
       base::Process::Current().handle(),
       pp_module(),
-      &MockGetInterface));
+      &MockGetInterface,
+      status_receiver_.get()));
   host_dispatcher_->InitWithTestSink(&sink());
   HostDispatcher::SetForInstance(pp_instance(), host_dispatcher_.get());
 }
 
 void HostProxyTestHarness::SetUpHarnessWithChannel(
     const IPC::ChannelHandle& channel_handle,
     base::MessageLoopProxy* ipc_message_loop,
     base::WaitableEvent* shutdown_event,
     bool is_client) {
   // These must be first since the dispatcher set-up uses them.
   PpapiGlobals::SetPpapiGlobalsOnThreadForTest(GetGlobals());
   delegate_mock_.Init(ipc_message_loop, shutdown_event);
 
   host_dispatcher_.reset(new HostDispatcher(
       base::Process::Current().handle(),
       pp_module(),
-      &MockGetInterface));
+      &MockGetInterface,
+      status_receiver_.get()));
   ppapi::Preferences preferences;
   host_dispatcher_->InitHostWithChannel(&delegate_mock_, channel_handle,
                                         is_client, preferences);
   HostDispatcher::SetForInstance(pp_instance(), host_dispatcher_.get());
 }
 
 void HostProxyTestHarness::TearDownHarness() {
   HostDispatcher::RemoveForInstance(pp_instance());
   host_dispatcher_.reset();
 }
@@ skipping 81 matching lines @@
   remote_harness_torn_down.Wait();
 
   local_harness_->TearDownHarness();
 
   io_thread_.Stop();
 }
 
 
 }  // namespace proxy
 }  // namespace ppapi