Reland of Initial version of file wrapper

webrtc/base/BUILD.gn

 # Copyright (c) 2014 The WebRTC project authors. All Rights Reserved.
 #
 # Use of this source code is governed by a BSD-style license
 # that can be found in the LICENSE file in the root of the source
 # tree. An additional intellectual property rights grant can be found
 # in the file PATENTS.  All contributing project authors may
 # be found in the AUTHORS file in the root of the source tree.
 
 import("//build/config/crypto.gni")
 import("//build/config/ui.gni")
@@ skipping 106 matching lines @@
     "copyonwritebuffer.h",
     "criticalsection.cc",
     "criticalsection.h",
     "deprecation.h",
     "event.cc",
     "event.h",
     "event_tracer.cc",
     "event_tracer.h",
     "exp_filter.cc",
     "exp_filter.h",
+    "file.cc",
+    "file.h",
     "format_macros.h",
     "location.cc",
     "location.h",
     "md5.cc",
     "md5.h",
     "md5digest.cc",
     "md5digest.h",
     "mod_ops.h",
     "onetimeevent.h",
     "optional.h",
@@ skipping 32 matching lines @@
     "timestampaligner.h",
     "timeutils.cc",
     "timeutils.h",
     "trace_event.h",
   ]
 
   if (is_android) {
     libs += [ "log" ]
   }
 
+  if (is_posix) {
+    sources += [ "file_posix.cc" ]
+  }
+
+  if (is_win) {
+    sources += [ "file_win.cc" ]
+  }
+
   if (build_with_chromium) {
     # Dependency on chromium's logging (in //base).
     deps += [ "//base:base" ]
     sources += [
       "../../webrtc_overrides/webrtc/base/logging.cc",
       "../../webrtc_overrides/webrtc/base/logging.h",
     ]
     include_dirs = [ "../../webrtc_overrides" ]
   } else {
     sources += [
@@ skipping 564 matching lines @@
       "java/src/org/webrtc/Logging.java",
       "java/src/org/webrtc/Size.java",
       "java/src/org/webrtc/ThreadUtils.java",
     ]
 
     deps = [
       "//base:base_java",
     ]
   }
 }