Shard v8_base.lib on Windows to avoid 2G .lib limit

tools/gyp/v8.gyp

Index: tools/gyp/v8.gyp
diff --git a/tools/gyp/v8.gyp b/tools/gyp/v8.gyp
index 893ab4619041a13f4744aa1d5c12301e204edce8..fe2ba188d6774fc44ffd3d1acc2eb06144db7810 100644
--- a/tools/gyp/v8.gyp
+++ b/tools/gyp/v8.gyp
@@ -1286,6 +1286,10 @@
             'gyp_generators': '<!(echo $GYP_GENERATORS)',
           },
           'msvs_disabled_warnings': [4351, 4355, 4800],
+          # When building Official, the .lib is too large and exceeds the 2G
+          # limit. This breaks it into multiple pieces to avoid the limit.
+          # See http://crbug.com/485155.
+          'msvs_shard': 4,
         }],
         ['component=="shared_library"', {
           'defines': [