Delete the utility process startup ping.

chrome/browser/media_galleries/fileapi/safe_audio_video_checker.cc

 // Copyright 2013 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 "chrome/browser/media_galleries/fileapi/safe_audio_video_checker.h"
 
 #include <stdint.h>
 #include <utility>
 
 #include "base/bind.h"
@@ skipping 17 matching lines @@
     base::File file,
     const storage::CopyOrMoveFileValidator::ResultCallback& callback)
     : state_(INITIAL_STATE), file_(std::move(file)), callback_(callback) {
   DCHECK(!callback.is_null());
 }
 
 void SafeAudioVideoChecker::Start() {
   DCHECK_CURRENTLY_ON(content::BrowserThread::IO);
   if (state_ != INITIAL_STATE)
     return;
-  state_ = PINGED_STATE;
+  state_ = STARTED_STATE;
 
   if (!file_.IsValid()) {
     callback_.Run(base::File::FILE_ERROR_SECURITY);
     state_ = FINISHED_STATE;
     return;
   }
 
+  IPC::PlatformFileForTransit file_for_transit =
+      IPC::TakePlatformFileForTransit(std::move(file_));
+  if (file_for_transit == IPC::InvalidPlatformFileForTransit()) {
+    OnCheckingFinished(false /* valid? */);
+    return;
+  }
+
   utility_process_host_ = content::UtilityProcessHost::Create(
       this, base::ThreadTaskRunnerHandle::Get())->AsWeakPtr();
   utility_process_host_->SetName(l10n_util::GetStringUTF16(
       IDS_UTILITY_PROCESS_MEDIA_FILE_CHECKER_NAME));
-  utility_process_host_->Send(new ChromeUtilityMsg_StartupPing);
-}
 
-SafeAudioVideoChecker::~SafeAudioVideoChecker() {}
-
-void SafeAudioVideoChecker::OnProcessStarted() {
-  DCHECK_CURRENTLY_ON(content::BrowserThread::IO);
-  if (state_ != PINGED_STATE)
-    return;
-  state_ = STARTED_STATE;
-
-  IPC::PlatformFileForTransit file_for_transit =
-      IPC::TakePlatformFileForTransit(std::move(file_));
-  if (file_for_transit == IPC::InvalidPlatformFileForTransit()) {
-    OnCheckingFinished(false /* valid? */);
-    return;
-  }
   const int64_t kFileDecodeTimeInMS = 250;
   utility_process_host_->Send(new ChromeUtilityMsg_CheckMediaFile(
       kFileDecodeTimeInMS, file_for_transit));
 }
 
+SafeAudioVideoChecker::~SafeAudioVideoChecker() {}
+
 void SafeAudioVideoChecker::OnCheckingFinished(bool valid) {
   DCHECK_CURRENTLY_ON(content::BrowserThread::IO);
   if (state_ != STARTED_STATE)
     return;
   state_ = FINISHED_STATE;
 
   callback_.Run(valid ? base::File::FILE_OK :
                         base::File::FILE_ERROR_SECURITY);
 }
 
 void SafeAudioVideoChecker::OnProcessCrashed(int exit_code) {
   OnCheckingFinished(false);
 }
 
 bool SafeAudioVideoChecker::OnMessageReceived(const IPC::Message& message) {
   bool handled = true;
   IPC_BEGIN_MESSAGE_MAP(SafeAudioVideoChecker, message)
-    IPC_MESSAGE_HANDLER(ChromeUtilityHostMsg_ProcessStarted,
-        OnProcessStarted)
     IPC_MESSAGE_HANDLER(ChromeUtilityHostMsg_CheckMediaFile_Finished,
         OnCheckingFinished)
     IPC_MESSAGE_UNHANDLED(handled = false)
   IPC_END_MESSAGE_MAP()
   return handled;
 }