Fix the mac build to add dmg_fp to the libbase.a.

third_party/dmg_fp/dmg_fp.h

Index: third_party/dmg_fp/dmg_fp.h
diff --git a/third_party/dmg_fp/dmg_fp.h b/third_party/dmg_fp/dmg_fp.h
deleted file mode 100644
index 21c7c9788a7a86b0f2834a51b43290d9ce81eb3d..0000000000000000000000000000000000000000
--- a/third_party/dmg_fp/dmg_fp.h
+++ /dev/null
@@ -1,29 +0,0 @@
-// Copyright (c) 2008 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.
-
-#ifndef THIRD_PARTY_DMG_FP_H_
-#define THIRD_PARTY_DMG_FP_H_
-
-namespace dmg_fp {
-
-// Return a nearest machine number to the input decimal
-// string (or set errno to ERANGE). With IEEE arithmetic, ties are
-// broken by the IEEE round-even rule.  Otherwise ties are broken by
-// biased rounding (add half and chop).
-double strtod(const char* s00, char** se);
-
-// Convert double to ASCII string. For meaning of parameters
-// see dtoa.cc file.
-char* dtoa(double d, int mode, int ndigits,
-           int* decpt, int* sign, char** rve);
-
-// Must be used to free values returned by dtoa.
-void freedtoa(char* s);
-
-// Store the closest decimal approximation to x in b.
-char* g_fmt(char* b, double x);
-
-}  // namespace dmg_fp
-
-#endif  // THIRD_PARTY_DMG_FP_H_