Initial pass at integrating Differ into the chromoting host code....

remoting/host/simple_host_process.cc

Index: remoting/host/simple_host_process.cc
===================================================================
--- remoting/host/simple_host_process.cc	(revision 55264)
+++ remoting/host/simple_host_process.cc	(working copy)
@@ -103,7 +103,7 @@
 
   if (fake) {
     // Inject a fake capturer.
-    LOG(INFO) << "Usage a fake capturer.";
+    LOG(INFO) << "Using a fake capturer.";
     capturer.reset(new remoting::CapturerFake());
   }
 
@@ -131,7 +131,7 @@
                                    encoder.release(),
                                    executor.release());
 
-  // Let the chromoting host runs until the shutdown task is executed.
+  // Let the chromoting host run until the shutdown task is executed.
   MessageLoop message_loop(MessageLoop::TYPE_UI);
   host->Start(NewRunnableFunction(&ShutdownTask, &message_loop));
   message_loop.Run();