Replace all usage of LOG(INFO) in Chromoting host with HOST_LOG to bypass the presubmit check.

remoting/host/dns_blackhole_checker.cc

Index: remoting/host/dns_blackhole_checker.cc
diff --git a/remoting/host/dns_blackhole_checker.cc b/remoting/host/dns_blackhole_checker.cc
index d7f48e3d2a1fdb81c0c3eab764463f46a7ee819f..37ed0aefd63d6c549ac2f1b808f566a2a0693921 100644
--- a/remoting/host/dns_blackhole_checker.cc
+++ b/remoting/host/dns_blackhole_checker.cc
@@ -6,6 +6,7 @@
 
 #include "net/url_request/url_fetcher.h"
 #include "net/url_request/url_request_context_getter.h"
+#include "remoting/base/logging.h"
 #include "url/gurl.h"
 
 namespace remoting {
@@ -33,10 +34,10 @@ void DnsBlackholeChecker::OnURLFetchComplete(const net::URLFetcher* source) {
   int response = source->GetResponseCode();
   bool allow = false;
   if (source->GetResponseCode() == 200) {
-    LOG(INFO) << "Successfully connected to host talkgadget.";
+    HOST_LOG << "Successfully connected to host talkgadget.";
     allow = true;
   } else {
-    LOG(INFO) << "Unable to connect to host talkgadget (" << response << ")";
+    HOST_LOG << "Unable to connect to host talkgadget (" << response << ")";
   }
   url_fetcher_.reset(NULL);
   callback_.Run(allow);
@@ -56,13 +57,13 @@ void DnsBlackholeChecker::CheckForDnsBlackhole(
       talkgadget_url += talkgadget_prefix_;
     }
     talkgadget_url += kTalkGadgetUrl;
-    LOG(INFO) << "Verifying connection to " << talkgadget_url;
+    HOST_LOG << "Verifying connection to " << talkgadget_url;
     url_fetcher_.reset(net::URLFetcher::Create(GURL(talkgadget_url),
                                                net::URLFetcher::GET, this));
     url_fetcher_->SetRequestContext(url_request_context_getter_.get());
     url_fetcher_->Start();
   } else {
-    LOG(INFO) << "Pending connection check";
+    HOST_LOG << "Pending connection check";
   }
 }