[inspector] fixed all shorten-64-to-32 warnings

src/v8.gyp

Index: src/v8.gyp
diff --git a/src/v8.gyp b/src/v8.gyp
index e75589fa827395c11759d4fd79034f96077a81a4..7bc0c437ad2ea224156a936215b94373edac8d5b 100644
--- a/src/v8.gyp
+++ b/src/v8.gyp
@@ -1748,7 +1748,6 @@
           ],
           # TODO(dgozman): fix these warnings and enable them.
           'msvs_disabled_warnings': [
-            4267,  # Truncation from size_t to int.
             4305,  # Truncation from 'type1' to 'type2'.
             4324,  # Struct padded due to declspec(align).
             4714,  # Function marked forceinline not inlined.
@@ -1757,7 +1756,6 @@
           ],
           'cflags': [
             '-Wno-zero-length-array',
-            '-Wno-shorten-64-to-32',
             '-Wno-deprecated-declarations',
           ],
         }],