Split macros, etc. from base/basictypes.h into base/macros.h.

Document the old-school types as deprecated, now that we use stdint.h
everywhere.

R=brettw@chromium.org
BUG=138542

Review URL: https://codereview.chromium.org/127293002

git-svn-id: svn://svn.chromium.org/chrome/trunk/src@243653 0039d316-1c4b-4281-b951-d872f2087c98

base/base.gypi

@@ -294,6 +294,7 @@
           'mac/scoped_sending_event.h',
           'mac/scoped_sending_event.mm',
           'mac/sdk_forward_declarations.h',
+          'macros.h',
           'md5.cc',
           'md5.h',
           'memory/aligned_memory.cc',