Move base64 from 'net/base' into 'base'.

net/net.gyp

Index: net/net.gyp
diff --git a/net/net.gyp b/net/net.gyp
index 4a302f9813197486b89b6212d6b443790da43d11..5a7f7b287fb2e50cc1d99de93b17afcbb4dcd84c 100644
--- a/net/net.gyp
+++ b/net/net.gyp
@@ -18,7 +18,6 @@
         '../third_party/bzip2/bzip2.gyp:bzip2',
         '../third_party/icu/icu.gyp:icui18n',
         '../third_party/icu/icu.gyp:icuuc',
-        '../third_party/modp_b64/modp_b64.gyp:modp_b64',
         '../third_party/zlib/zlib.gyp:zlib',
         'net_resources',
       ],
@@ -27,8 +26,6 @@
         'base/address_list.cc',
         'base/address_list.h',
         'base/auth.h',
-        'base/base64.cc',
-        'base/base64.h',
         'base/bzip2_filter.cc',
         'base/bzip2_filter.h',
         'base/cache_type.h',
@@ -221,7 +218,6 @@
         '../third_party/bzip2/bzip2.gyp:bzip2',
         '../third_party/icu/icu.gyp:icui18n',
         '../third_party/icu/icu.gyp:icuuc',
-        '../third_party/modp_b64/modp_b64.gyp:modp_b64',
         '../third_party/zlib/zlib.gyp:zlib',
         'net_base',
         'net_resources',
@@ -566,7 +562,6 @@
       'msvs_guid': 'E99DA267-BE90-4F45-88A1-6919DB2C7567',
       'sources': [
         'base/address_list_unittest.cc',
-        'base/base64_unittest.cc',
         'base/bzip2_filter_unittest.cc',
         'base/cookie_monster_unittest.cc',
         'base/cookie_policy_unittest.cc',