Rename README.google to README.chromium.

third_party/modp_b64/README.google

Index: third_party/modp_b64/README.google
===================================================================
--- third_party/modp_b64/README.google	(revision 8952)
+++ third_party/modp_b64/README.google	(working copy)
@@ -1,14 +0,0 @@
-This directory contains files extracted from modp-base64-v2.0.0.tar.bz2,
-downloaded from http://modp.com/release/base64/
-
-See the header of modp_b64.cc for the license terms.
-
-The modp_b64.c file was modified to remove the inclusion of modp's config.h
-and to fix compilation errors that occur under VC8.  The file was renamed
-modp_b64.cc to force it to be compiled as C++ so that the inclusion of
-basictypes.h could be possible.
-
-The file modp_b64_data.h was generated by modp_b64_gen.c (under Linux), which
-is not included in this directory.  The resulting header was modified to remove
-the "#include <stdint.h>" since that header file does not exist under VC8.  The
-required typedefs for uint8_t and uint32_t were defined in its place.