Modify Chromoting logging to hook into base logging.

remoting/host/chromoting_host.h

Index: remoting/host/chromoting_host.h
diff --git a/remoting/host/chromoting_host.h b/remoting/host/chromoting_host.h
index 5b45d4353a49203c370e95fabee7480f102ca072..423e2fadacae69a2db16dac35000fc544dc51498 100644
--- a/remoting/host/chromoting_host.h
+++ b/remoting/host/chromoting_host.h
@@ -36,7 +36,6 @@ class Capturer;
 class ChromotingHostContext;
 class DesktopEnvironment;
 class Encoder;
-class Logger;
 class MutableHostConfig;
 class ScreenRecorder;
 
@@ -78,7 +77,6 @@ class ChromotingHost : public base::RefCountedThreadSafe<ChromotingHost>,
                                 MutableHostConfig* config,
                                 DesktopEnvironment* environment,
                                 AccessVerifier* access_verifier,
-                                Logger* logger,
                                 bool allow_nat_traversal);
 
   // Asynchronously start the host process.
@@ -120,8 +118,6 @@ class ChromotingHost : public base::RefCountedThreadSafe<ChromotingHost>,
   virtual void LocalLoginFailed(
       scoped_refptr<protocol::ConnectionToClient> client);
 
-  Logger* logger() { return logger_; }
-
   // SessionManager::Listener implementation.
   virtual void OnSessionManagerInitialized() OVERRIDE;
   virtual void OnIncomingSession(