Cleanup: Add a const variable for /proc/self/exe.

content/common/child_process_host_impl.cc

 // Copyright (c) 2012 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 "content/common/child_process_host_impl.h"
 
 #include <limits>
 
 #include "base/atomicops.h"
 #include "base/command_line.h"
@@ skipping 80 matching lines @@
   child_path = CommandLine::ForCurrentProcess()->GetSwitchValuePath(
       switches::kBrowserSubprocessPath);
 
 #if defined(OS_LINUX)
   // Use /proc/self/exe rather than our known binary path so updates
   // can't swap out the binary from underneath us.
   // When running under Valgrind, forking /proc/self/exe ends up forking the
   // Valgrind executable, which then crashes. However, it's almost safe to
   // assume that the updates won't happen while testing with Valgrind tools.
   if (child_path.empty() && flags & CHILD_ALLOW_SELF && !RunningOnValgrind())
-    child_path = FilePath("/proc/self/exe");
+    child_path = FilePath(base::kProcSelfExe);
 #endif
 
   // On most platforms, the child executable is the same as the current
   // executable.
   if (child_path.empty())
     PathService::Get(content::CHILD_PROCESS_EXE, &child_path);
 
 #if defined(OS_MACOSX)
   DCHECK(!(flags & CHILD_NO_PIE && flags & CHILD_ALLOW_HEAP_EXECUTION));
 
@@ skipping 175 matching lines @@
     base::SharedMemoryHandle* handle) {
   AllocateSharedMemory(buffer_size, peer_handle_, handle);
 }
 
 void ChildProcessHostImpl::OnShutdownRequest() {
   if (delegate_->CanShutdown())
     Send(new ChildProcessMsg_Shutdown());
 }
 
 }  // namespace content