mandoline sandbox: prewarm libraries before we raise the sandbox.

mojo/runner/child_process_host.cc

 // Copyright 2014 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 "mojo/runner/child_process_host.h"
 
 #include "base/bind.h"
 #include "base/command_line.h"
 #include "base/location.h"
 #include "base/logging.h"
@@ skipping 64 matching lines @@
   return rv;
 }
 
 void ChildProcessHost::StartApp(
     InterfaceRequest<Application> application_request,
     const ChildController::StartAppCallback& on_app_complete) {
   DCHECK(controller_);
 
   on_app_complete_ = on_app_complete;
   controller_->StartApp(
-      app_path_.AsUTF8Unsafe(), clean_app_path_, application_request.Pass(),
+      application_request.Pass(),
       base::Bind(&ChildProcessHost::AppCompleted, base::Unretained(this)));
 }
 
 void ChildProcessHost::ExitNow(int32_t exit_code) {
   DCHECK(controller_);
 
   controller_->ExitNow(exit_code);
 }
 
 void ChildProcessHost::DidStart(bool success) {
   DVLOG(2) << "ChildProcessHost::DidStart()";
 
   if (!success) {
     LOG(ERROR) << "Failed to start child process";
     AppCompleted(MOJO_RESULT_UNKNOWN);
     return;
   }
 }
 
 bool ChildProcessHost::DoLaunch() {
   const base::CommandLine* parent_command_line =
       base::CommandLine::ForCurrentProcess();
   base::CommandLine child_command_line(parent_command_line->GetProgram());
   child_command_line.AppendArguments(*parent_command_line, false);
   child_command_line.AppendSwitchPath(switches::kChildProcess, app_path_);
 
+  if (clean_app_path_)
+    child_command_line.AppendSwitch(switches::kDeleteAfterLoad);
+
   if (start_sandboxed_)
     child_command_line.AppendSwitch(switches::kEnableSandbox);
 
   embedder::HandlePassingInformation handle_passing_info;
   platform_channel_pair_.PrepareToPassClientHandleToChildProcess(
       &child_command_line, &handle_passing_info);
 
   base::LaunchOptions options;
 #if defined(OS_WIN)
   options.handles_to_inherit = &handle_passing_info;
@@ skipping 35 matching lines @@
 
 void ChildProcessHost::DidCreateChannel(embedder::ChannelInfo* channel_info) {
   DVLOG(2) << "AppChildProcessHost::DidCreateChannel()";
 
   CHECK(channel_info);
   channel_info_ = channel_info;
 }
 
 }  // namespace runner
 }  // namespace mojo