Delete the utility process startup ping.

chrome/utility/chrome_content_utility_client.cc

Index: chrome/utility/chrome_content_utility_client.cc
diff --git a/chrome/utility/chrome_content_utility_client.cc b/chrome/utility/chrome_content_utility_client.cc
index 6bef1f6c2c2d2504981a6ffda1d5b8bceacbd358..f00b01c9490bc88b9616ee64927d2377bdfc9f94 100644
--- a/chrome/utility/chrome_content_utility_client.cc
+++ b/chrome/utility/chrome_content_utility_client.cc
@@ -161,7 +161,6 @@ bool ChromeContentUtilityClient::OnMessageReceived(
                         OnPatchFileBsdiff)
     IPC_MESSAGE_HANDLER(ChromeUtilityMsg_PatchFileCourgette,
                         OnPatchFileCourgette)
-    IPC_MESSAGE_HANDLER(ChromeUtilityMsg_StartupPing, OnStartupPing)
 #if defined(FULL_SAFE_BROWSING)
     IPC_MESSAGE_HANDLER(ChromeUtilityMsg_AnalyzeZipFileForDownloadProtection,
                         OnAnalyzeZipFileForDownloadProtection)
@@ -278,11 +277,6 @@ void ChromeContentUtilityClient::OnPatchFileCourgette(
   ReleaseProcessIfNeeded();
 }
 
-void ChromeContentUtilityClient::OnStartupPing() {
-  Send(new ChromeUtilityHostMsg_ProcessStarted);
-  // Don't release the process, we assume further messages are on the way.
-}
-
 #if defined(FULL_SAFE_BROWSING)
 void ChromeContentUtilityClient::OnAnalyzeZipFileForDownloadProtection(
     const IPC::PlatformFileForTransit& zip_file,