Add OOP memory logging allocator shim

chrome/common/profiling/BUILD.gn

 # Copyright 2017 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.
 
 import("//chrome/common/features.gni")
 
 if (enable_oop_heap_profiling) {
   static_library("profiling") {
     sources = [
+      "memlog_allocator_shim.cc",
+      "memlog_allocator_shim.h",
+      "memlog_sender.cc",
+      "memlog_sender.h",
       "memlog_sender_pipe.h",
       "memlog_sender_pipe_win.cc",
       "memlog_sender_pipe_win.h",
       "memlog_stream.cc",
       "memlog_stream.h",
     ]
 
     deps = [
       "//base",
       "//base:debugging_flags",
       "//chrome/common:constants",
     ]
   }
 } else {
   # Dummy group so this target can be unconditionally depended on.
   group("profiling") {
   }
 }