Get rid of all pid references from base::SharedMemoryHandle.

base/memory/shared_memory_handle.h

 // Copyright 2015 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.
 
 #ifndef BASE_MEMORY_SHARED_MEMORY_HANDLE_H_
 #define BASE_MEMORY_SHARED_MEMORY_HANDLE_H_
 
 #include <stddef.h>
 
 #include "build/build_config.h"
@@ skipping 65 matching lines @@
   // common for existing code to make shallow copies of SharedMemoryHandle, and
   // the one that is finally passed into a base::SharedMemory is the one that
   // "consumes" the fd.
   explicit SharedMemoryHandle(const base::FileDescriptor& file_descriptor);
 
   // Makes a Mach-based SharedMemoryHandle of the given size. On error,
   // subsequent calls to IsValid() return false.
   explicit SharedMemoryHandle(mach_vm_size_t size);
 
   // Makes a Mach-based SharedMemoryHandle from |memory_object|, a named entry
-  // in the task with process id |pid|. The memory region has size |size|.
-  SharedMemoryHandle(mach_port_t memory_object,
-                     mach_vm_size_t size,
-                     base::ProcessId pid);
+  // in the current task. The memory region has size |size|.
+  SharedMemoryHandle(mach_port_t memory_object, mach_vm_size_t size);
 
   // Exposed so that the SharedMemoryHandle can be transported between
   // processes.
   mach_port_t GetMemoryObject() const;
 
   // Returns false on a failure to determine the size. On success, populates the
   // output variable |size|.
   bool GetSize(size_t* size) const;
 
   // The SharedMemoryHandle must be valid.
   // Returns whether the SharedMemoryHandle was successfully mapped into memory.
   // On success, |memory| is an output variable that contains the start of the
   // mapped memory.
   bool MapAt(off_t offset, size_t bytes, void** memory, bool read_only);
 #elif defined(OS_WIN)
-  SharedMemoryHandle(HANDLE h, base::ProcessId pid);
-
-  // Whether |pid_| is the same as the current process's id.
-  bool BelongsToCurrentProcess() const;
-
-  // Whether handle_ needs to be duplicated into the destination process when
-  // an instance of this class is passed over a Chrome IPC channel.
-  bool NeedsBrokering() const;
+  SharedMemoryHandle(HANDLE h);
 
   HANDLE GetHandle() const;
-  base::ProcessId GetPID() const;
 #else
   // This constructor is deprecated, as it fails to propagate the GUID, which
   // will be added in the near future.
   // TODO(rockot): Remove this constructor once Mojo supports GUIDs.
   // https://crbug.com/713763.
   explicit SharedMemoryHandle(const base::FileDescriptor& file_descriptor);
 
   // Creates a SharedMemoryHandle from an |fd| supplied from an external
   // service.
   static SharedMemoryHandle ImportHandle(int fd);
@@ skipping 23 matching lines @@
   union {
     FileDescriptor file_descriptor_;
 
     struct {
       mach_port_t memory_object_;
 
       // The size of the shared memory region when |type_| is MACH. Only
       // relevant if |memory_object_| is not |MACH_PORT_NULL|.
       mach_vm_size_t size_;
 
-      // The pid of the process in which |memory_object_| is usable. Only
-      // relevant if |memory_object_| is not |MACH_PORT_NULL|.
-      base::ProcessId pid_;
-
       // Whether passing this object as a parameter to an IPC message passes
       // ownership of |memory_object_| to the IPC stack. This is meant to mimic
       // the behavior of the |auto_close| parameter of FileDescriptor.
       // Defaults to |false|.
       bool ownership_passes_to_ipc_;
     };
   };
 #elif defined(OS_WIN)
   HANDLE handle_;
 
-  // The process in which |handle_| is valid and can be used. If |handle_| is
-  // invalid, this will be kNullProcessId.
-  base::ProcessId pid_;
-
   // Whether passing this object as a parameter to an IPC message passes
   // ownership of |handle_| to the IPC stack. This is meant to mimic the
   // behavior of the |auto_close| parameter of FileDescriptor. This member only
   // affects attachment-brokered SharedMemoryHandles.
   // Defaults to |false|.
   bool ownership_passes_to_ipc_;
 #else
   FileDescriptor file_descriptor_;
 #endif
 };
 
 }  // namespace base
 
 #endif  // BASE_MEMORY_SHARED_MEMORY_HANDLE_H_