Update third_party/protobuf to protobuf-v3.0.0-beta-3

third_party/protobuf/src/google/protobuf/io/coded_stream.h

Index: third_party/protobuf/src/google/protobuf/io/coded_stream.h
diff --git a/third_party/protobuf/src/google/protobuf/io/coded_stream.h b/third_party/protobuf/src/google/protobuf/io/coded_stream.h
index 2da096c5c8d19204117edee08cf6326fab8c93b7..f211c69ad399e7905ef1646835e4bacc7a667adc 100644
--- a/third_party/protobuf/src/google/protobuf/io/coded_stream.h
+++ b/third_party/protobuf/src/google/protobuf/io/coded_stream.h
@@ -117,7 +117,7 @@
   #if !defined(PROTOBUF_DISABLE_LITTLE_ENDIAN_OPT_FOR_TEST)
     #define PROTOBUF_LITTLE_ENDIAN 1
   #endif
-  #if _MSC_VER >= 1300
+  #if _MSC_VER >= 1300 && !defined(__INTEL_COMPILER)
     // If MSVC has "/RTCc" set, it will complain about truncating casts at
     // runtime.  This file contains some intentional truncating casts.
     #pragma runtime_checks("c", off)
@@ -1135,7 +1135,7 @@ inline void CodedOutputStream::WriteVarint32(uint32 value) {
     // this write won't cross the end, so we can skip the checks.
     uint8* target = buffer_;
     uint8* end = WriteVarint32ToArray(value, target);
-    int size = end - target;
+    int size = static_cast<int>(end - target);
     Advance(size);
   } else {
     WriteVarint32SlowPath(value);
@@ -1285,9 +1285,9 @@ inline bool CodedInputStream::IsFlat() const {
 }  // namespace protobuf
 
 
-#if defined(_MSC_VER) && _MSC_VER >= 1300
+#if _MSC_VER >= 1300 && !defined(__INTEL_COMPILER)
   #pragma runtime_checks("c", restore)
-#endif  // _MSC_VER
+#endif  // _MSC_VER && !defined(__INTEL_COMPILER)
 
 }  // namespace google
 #endif  // GOOGLE_PROTOBUF_IO_CODED_STREAM_H__