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

base/process_util.h

 // 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.
 
 // This file/namespace contains utility functions for enumerating, ending and
 // computing statistics of processes.
 
 #ifndef BASE_PROCESS_UTIL_H_
 #define BASE_PROCESS_UTIL_H_
 
@@ skipping 187 matching lines @@
 const int kMaxOomScore = 1000;
 
 // This adjusts /proc/<pid>/oom_score_adj so the Linux OOM killer will
 // prefer to kill certain process types over others. The range for the
 // adjustment is [-1000, 1000], with [0, 1000] being user accessible.
 // If the Linux system doesn't support the newer oom_score_adj range
 // of [0, 1000], then we revert to using the older oom_adj, and
 // translate the given value into [0, 15].  Some aliasing of values
 // may occur in that case, of course.
 BASE_EXPORT bool AdjustOOMScore(ProcessId process, int score);
+
+// /proc/self/exe refers to the current executable.
+BASE_EXPORT extern const char kProcSelfExe[];
 #endif  // defined(OS_LINUX) || defined(OS_ANDROID)
 
 #if defined(OS_POSIX)
 // Returns the ID for the parent of the given process.
 BASE_EXPORT ProcessId GetParentProcessId(ProcessHandle process);
 
 // Close all file descriptors, except those which are a destination in the
 // given multimap. Only call this function in a child process where you know
 // that there aren't any other threads.
 BASE_EXPORT void CloseSuperfluousFds(const InjectiveMultimap& saved_map);
@@ skipping 481 matching lines @@
  public:
   ~ProcessMetrics();
 
   // Creates a ProcessMetrics for the specified process.
   // The caller owns the returned object.
 #if !defined(OS_MACOSX) || defined(OS_IOS)
   static ProcessMetrics* CreateProcessMetrics(ProcessHandle process);
 #else
   class PortProvider {
    public:
+    virtual ~PortProvider() {}
+
     // Should return the mach task for |process| if possible, or else
     // |MACH_PORT_NULL|. Only processes that this returns tasks for will have
     // metrics on OS X (except for the current process, which always gets
     // metrics).
     virtual mach_port_t TaskForPid(ProcessHandle process) const = 0;
   };
 
   // The port provider needs to outlive the ProcessMetrics object returned by
   // this function. If NULL is passed as provider, the returned object
   // only returns valid metrics if |process| is the current process.
@@ skipping 139 matching lines @@
 // instance running inside the parent.  The parent's Breakpad instance should
 // not handle the child's exceptions.  Calling RestoreDefaultExceptionHandler
 // in the child after forking will restore the standard exception handler.
 // See http://crbug.com/20371/ for more details.
 void RestoreDefaultExceptionHandler();
 #endif  // defined(OS_MACOSX)
 
 }  // namespace base
 
 #endif  // BASE_PROCESS_UTIL_H_