Revert "third_party/protobuf: Update to HEAD (83d681ee2c)"

third_party/protobuf/python/google/protobuf/pyext/safe_numerics.h

Index: third_party/protobuf/python/google/protobuf/pyext/safe_numerics.h
diff --git a/third_party/protobuf/python/google/protobuf/pyext/safe_numerics.h b/third_party/protobuf/python/google/protobuf/pyext/safe_numerics.h
deleted file mode 100644
index 639ba2c8e3e9116f6b05e6497f1b6171a8a23efb..0000000000000000000000000000000000000000
--- a/third_party/protobuf/python/google/protobuf/pyext/safe_numerics.h
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@@ -1,164 +0,0 @@
-// Protocol Buffers - Google's data interchange format
-// Copyright 2008 Google Inc.  All rights reserved.
-// https://developers.google.com/protocol-buffers/
-//
-// Redistribution and use in source and binary forms, with or without
-// modification, are permitted provided that the following conditions are
-// met:
-//
-//     * Redistributions of source code must retain the above copyright
-// notice, this list of conditions and the following disclaimer.
-//     * Redistributions in binary form must reproduce the above
-// copyright notice, this list of conditions and the following disclaimer
-// in the documentation and/or other materials provided with the
-// distribution.
-//     * Neither the name of Google Inc. nor the names of its
-// contributors may be used to endorse or promote products derived from
-// this software without specific prior written permission.
-//
-// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
-// "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
-// LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
-// A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
-// OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
-// SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
-// LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
-// DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
-// THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
-// (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
-// OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
-
-#ifndef GOOGLE_PROTOBUF_PYTHON_CPP_SAFE_NUMERICS_H__
-#define GOOGLE_PROTOBUF_PYTHON_CPP_SAFE_NUMERICS_H__
-// Copied from chromium with only changes to the namespace.
-
-#include <limits>
-
-#include <google/protobuf/stubs/logging.h>
-#include <google/protobuf/stubs/common.h>
-
-namespace google {
-namespace protobuf {
-namespace python {
-
-template <bool SameSize, bool DestLarger,
-          bool DestIsSigned, bool SourceIsSigned>
-struct IsValidNumericCastImpl;
-
-#define BASE_NUMERIC_CAST_CASE_SPECIALIZATION(A, B, C, D, Code) \
-template <> struct IsValidNumericCastImpl<A, B, C, D> { \
-  template <class Source, class DestBounds> static inline bool Test( \
-      Source source, DestBounds min, DestBounds max) { \
-    return Code; \
-  } \
-}
-
-#define BASE_NUMERIC_CAST_CASE_SAME_SIZE(DestSigned, SourceSigned, Code) \
-  BASE_NUMERIC_CAST_CASE_SPECIALIZATION( \
-      true, true, DestSigned, SourceSigned, Code); \
-  BASE_NUMERIC_CAST_CASE_SPECIALIZATION( \
-      true, false, DestSigned, SourceSigned, Code)
-
-#define BASE_NUMERIC_CAST_CASE_SOURCE_LARGER(DestSigned, SourceSigned, Code) \
-  BASE_NUMERIC_CAST_CASE_SPECIALIZATION( \
-      false, false, DestSigned, SourceSigned, Code); \
-
-#define BASE_NUMERIC_CAST_CASE_DEST_LARGER(DestSigned, SourceSigned, Code) \
-  BASE_NUMERIC_CAST_CASE_SPECIALIZATION( \
-      false, true, DestSigned, SourceSigned, Code); \
-
-// The three top level cases are:
-// - Same size
-// - Source larger
-// - Dest larger
-// And for each of those three cases, we handle the 4 different possibilities
-// of signed and unsigned. This gives 12 cases to handle, which we enumerate
-// below.
-//
-// The last argument in each of the macros is the actual comparison code. It
-// has three arguments available, source (the value), and min/max which are
-// the ranges of the destination.
-
-
-// These are the cases where both types have the same size.
-
-// Both signed.
-BASE_NUMERIC_CAST_CASE_SAME_SIZE(true, true, true);
-// Both unsigned.
-BASE_NUMERIC_CAST_CASE_SAME_SIZE(false, false, true);
-// Dest unsigned, Source signed.
-BASE_NUMERIC_CAST_CASE_SAME_SIZE(false, true, source >= 0);
-// Dest signed, Source unsigned.
-// This cast is OK because Dest's max must be less than Source's.
-BASE_NUMERIC_CAST_CASE_SAME_SIZE(true, false,
-                                 source <= static_cast<Source>(max));
-
-
-// These are the cases where Source is larger.
-
-// Both unsigned.
-BASE_NUMERIC_CAST_CASE_SOURCE_LARGER(false, false, source <= max);
-// Both signed.
-BASE_NUMERIC_CAST_CASE_SOURCE_LARGER(true, true,
-                                     source >= min && source <= max);
-// Dest is unsigned, Source is signed.
-BASE_NUMERIC_CAST_CASE_SOURCE_LARGER(false, true,
-                                     source >= 0 && source <= max);
-// Dest is signed, Source is unsigned.
-// This cast is OK because Dest's max must be less than Source's.
-BASE_NUMERIC_CAST_CASE_SOURCE_LARGER(true, false,
-                                     source <= static_cast<Source>(max));
-
-
-// These are the cases where Dest is larger.
-
-// Both unsigned.
-BASE_NUMERIC_CAST_CASE_DEST_LARGER(false, false, true);
-// Both signed.
-BASE_NUMERIC_CAST_CASE_DEST_LARGER(true, true, true);
-// Dest is unsigned, Source is signed.
-BASE_NUMERIC_CAST_CASE_DEST_LARGER(false, true, source >= 0);
-// Dest is signed, Source is unsigned.
-BASE_NUMERIC_CAST_CASE_DEST_LARGER(true, false, true);
-
-#undef BASE_NUMERIC_CAST_CASE_SPECIALIZATION
-#undef BASE_NUMERIC_CAST_CASE_SAME_SIZE
-#undef BASE_NUMERIC_CAST_CASE_SOURCE_LARGER
-#undef BASE_NUMERIC_CAST_CASE_DEST_LARGER
-
-
-// The main test for whether the conversion will under or overflow.
-template <class Dest, class Source>
-inline bool IsValidNumericCast(Source source) {
-  typedef std::numeric_limits<Source> SourceLimits;
-  typedef std::numeric_limits<Dest> DestLimits;
-  GOOGLE_COMPILE_ASSERT(SourceLimits::is_specialized, argument_must_be_numeric);
-  GOOGLE_COMPILE_ASSERT(SourceLimits::is_integer, argument_must_be_integral);
-  GOOGLE_COMPILE_ASSERT(DestLimits::is_specialized, result_must_be_numeric);
-  GOOGLE_COMPILE_ASSERT(DestLimits::is_integer, result_must_be_integral);
-
-  return IsValidNumericCastImpl<
-      sizeof(Dest) == sizeof(Source),
-      (sizeof(Dest) > sizeof(Source)),
-      DestLimits::is_signed,
-      SourceLimits::is_signed>::Test(
-          source,
-          DestLimits::min(),
-          DestLimits::max());
-}
-
-// checked_numeric_cast<> is analogous to static_cast<> for numeric types,
-// except that it CHECKs that the specified numeric conversion will not
-// overflow or underflow. Floating point arguments are not currently allowed
-// (this is COMPILE_ASSERTd), though this could be supported if necessary.
-template <class Dest, class Source>
-inline Dest checked_numeric_cast(Source source) {
-  GOOGLE_CHECK(IsValidNumericCast<Dest>(source));
-  return static_cast<Dest>(source);
-}
-
-}  // namespace python
-}  // namespace protobuf
-
-}  // namespace google
-#endif  // GOOGLE_PROTOBUF_PYTHON_CPP_SAFE_NUMERICS_H__