mandoline sandbox: prewarm libraries before we raise the sandbox.

mojo/runner/linux_sandbox.h

Index: mojo/runner/linux_sandbox.h
diff --git a/mandoline/app/desktop/linux_sandbox.h b/mojo/runner/linux_sandbox.h
similarity index 80%
rename from mandoline/app/desktop/linux_sandbox.h
rename to mojo/runner/linux_sandbox.h
index 82cc084a178d206a17c5351722acafcffb291411..4111cf5860065e1b7ccd698d84a33fd1cead6bcb 100644
--- a/mandoline/app/desktop/linux_sandbox.h
+++ b/mojo/runner/linux_sandbox.h
@@ -2,8 +2,8 @@
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
-#ifndef MANDOLINE_APP_DESKTOP_LINUX_SANDBOX_H_
-#define MANDOLINE_APP_DESKTOP_LINUX_SANDBOX_H_
+#ifndef MOJO_RUNNER_LINUX_SANDBOX_H_
+#define MOJO_RUNNER_LINUX_SANDBOX_H_
 
 #include "base/files/scoped_file.h"
 #include "sandbox/linux/bpf_dsl/bpf_dsl.h"
@@ -20,10 +20,6 @@ class LinuxSandbox {
           permissions);
   ~LinuxSandbox();
 
-  // Returns a vector of file permissions needed to load libraries.
-  static std::vector<sandbox::syscall_broker::BrokerFilePermission>
-  GetPermissions();
-
   // Grabs a file descriptor to /proc.
   void Warmup();
 
@@ -49,4 +45,4 @@ class LinuxSandbox {
 
 }  // namespace mandoline
 
-#endif  // MANDOLINE_APP_DESKTOP_LINUX_SANDBOX_H_
+#endif  // MOJO_RUNNER_LINUX_SANDBOX_H_