Start sorting methods in class declarations.

A lot of our headers are a mess and aren't organized. Impose the following
order on files in the base/ directory:

class Blah {
 each public/protected/private section:
  typedefs;
  enums;
  static constants;
  ctors;
  dtors;
  methods;
  overridden virtual methods;
  data members;
};

BUG=68682
TEST=compiles

Review URL: http://codereview.chromium.org/6081007

git-svn-id: svn://svn.chromium.org/chrome/trunk/src@70749 0039d316-1c4b-4281-b951-d872f2087c98
diff --git a/base/base.gypi b/base/base.gypi
index 3d650dc..f241967a 100644
--- a/base/base.gypi
+++ b/base/base.gypi
@@ -147,6 +147,7 @@
           'path_service.h',
           'pickle.cc',
           'pickle.h',
+          'platform_file.cc',
           'platform_file.h',
           'platform_file_posix.cc',
           'platform_file_win.cc',