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

ui/gfx/mojo/buffer_types_struct_traits.cc

Index: ui/gfx/mojo/buffer_types_struct_traits.cc
diff --git a/ui/gfx/mojo/buffer_types_struct_traits.cc b/ui/gfx/mojo/buffer_types_struct_traits.cc
index 14a98a8606fdc4fd89103397f07c5a3362b38a9a..5e3c0fcd6919c0493664b0283ec4bd3f206e5b25 100644
--- a/ui/gfx/mojo/buffer_types_struct_traits.cc
+++ b/ui/gfx/mojo/buffer_types_struct_traits.cc
@@ -129,8 +129,7 @@ bool StructTraits<gfx::mojom::GpuMemoryBufferHandleDataView,
       if (unwrap_result != MOJO_RESULT_OK)
         return false;
 #if defined(OS_WIN)
-      out->handle =
-          base::SharedMemoryHandle(platform_file, base::GetCurrentProcId());
+      out->handle = base::SharedMemoryHandle(platform_file);
 #else
       out->handle =
           base::SharedMemoryHandle(base::FileDescriptor(platform_file, true));