Move base to DEPS

base/third_party/dmg_fp/README.chromium

Index: base/third_party/dmg_fp/README.chromium
diff --git a/base/third_party/dmg_fp/README.chromium b/base/third_party/dmg_fp/README.chromium
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-Name: David M. Gay's floating point routines
-URL: http://www.netlib.org/fp/
-License: MIT-like
-
-Original dtoa.c file can be found at <http://www.netlib.org/fp/dtoa.c>.
-Original g_fmt.c file can be found at <http://www.netlib.org/fp/g_fmt.c>.
-
-List of changes made to original code:
-  - wrapped functions in dmg_fp namespace
-  - renamed .c files to .cc
-  - added dmg_fp.h header
-  - added #define IEEE_8087 to dtoa.cc
-  - added #define NO_HEX_FP to dtoa.cc
-  - made some minor changes to allow clean compilation under g++ -Wall, see
-    gcc_warnings.patch.
-  - made some minor changes to build on 64-bit, see gcc_64_bit.patch.
-  - made minor changes for -Wextra for Mac build, see mac_wextra.patch
-  - crash fix for running with reduced CPU float precision, see
-    float_precision_crash.patch and crbug.com/123157
-  - fixed warnings under msvc, see msvc_warnings.patch