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

mojo/edk/embedder/platform_shared_buffer.cc

Index: mojo/edk/embedder/platform_shared_buffer.cc
diff --git a/mojo/edk/embedder/platform_shared_buffer.cc b/mojo/edk/embedder/platform_shared_buffer.cc
index a6121503f244ee02bfd1d05538163d6721a43ef6..c53cda21375301a843c1b9f577c3dc2154e3b0f7 100644
--- a/mojo/edk/embedder/platform_shared_buffer.cc
+++ b/mojo/edk/embedder/platform_shared_buffer.cc
@@ -237,12 +237,10 @@ bool PlatformSharedBuffer::InitFromPlatformHandle(
   DCHECK(!shared_memory_);
 
 #if defined(OS_WIN)
-  base::SharedMemoryHandle handle(platform_handle.release().handle,
-                                  base::GetCurrentProcId());
+  base::SharedMemoryHandle handle(platform_handle.release().handle);
 #elif defined(OS_MACOSX) && !defined(OS_IOS)
   base::SharedMemoryHandle handle;
-  handle = base::SharedMemoryHandle(platform_handle.release().port, num_bytes_,
-                                    base::GetCurrentProcId());
+  handle = base::SharedMemoryHandle(platform_handle.release().port, num_bytes_);
 #else
   base::SharedMemoryHandle handle(
       base::FileDescriptor(platform_handle.release().handle, false));
@@ -261,10 +259,8 @@ bool PlatformSharedBuffer::InitFromPlatformHandlePair(
 #else  // defined(OS_MACOSX)
 
 #if defined(OS_WIN)
-  base::SharedMemoryHandle handle(rw_platform_handle.release().handle,
-                                  base::GetCurrentProcId());
-  base::SharedMemoryHandle ro_handle(ro_platform_handle.release().handle,
-                                     base::GetCurrentProcId());
+  base::SharedMemoryHandle handle(rw_platform_handle.release().handle);
+  base::SharedMemoryHandle ro_handle(ro_platform_handle.release().handle);
 #else  // defined(OS_WIN)
   base::SharedMemoryHandle handle(
       base::FileDescriptor(rw_platform_handle.release().handle, false));