Revert 6107 "Adds a modified copy of talk/base to webrtc/base. I..."

This breaks Chromium FYI builds and prevent roll of webrtc/libjingle to Chrome.

http://chromegw.corp.google.com/i/chromium.webrtc.fyi/builders/Win%20Builder/builds/457


> Adds a modified copy of talk/base to webrtc/base. It is the first step in migrating talk/base to webrtc/base.
> 
> BUG=N/A
> R=andrew@webrtc.org, wu@webrtc.org
> 
> Review URL: https://webrtc-codereview.appspot.com/12199004

TBR=henrike@webrtc.org

Review URL: https://webrtc-codereview.appspot.com/14479004

git-svn-id: http://webrtc.googlecode.com/svn/trunk@6116 4adac7df-926f-26a2-2b94-8c16560cd09d

1 files changed, 0 insertions, 79 deletions

diff --git a/webrtc/base/safe_conversions.h b/webrtc/base/safe_conversions.h
deleted file mode 100644
index f6cb24e412..0000000000
--- a/webrtc/base/safe_conversions.h
+++ /dev/null
@@ -1,79 +0,0 @@
-/*
- *  Copyright 2014 The WebRTC Project Authors. All rights reserved.
- *
- *  Use of this source code is governed by a BSD-style license
- *  that can be found in the LICENSE file in the root of the source
- *  tree. An additional intellectual property rights grant can be found
- *  in the file PATENTS.  All contributing project authors may
- *  be found in the AUTHORS file in the root of the source tree.
- */
-
-// Borrowed from Chromium's src/base/numerics/safe_conversions.h.
-
-#ifndef WEBRTC_BASE_SAFE_CONVERSIONS_H_
-#define WEBRTC_BASE_SAFE_CONVERSIONS_H_
-
-#include <limits>
-
-#include "webrtc/base/common.h"
-#include "webrtc/base/logging.h"
-#include "webrtc/base/safe_conversions_impl.h"
-
-namespace rtc {
-
-inline void Check(bool condition) {
-  if (!condition) {
-    LOG(LS_ERROR) << "CHECK failed.";
-    Break();
-    // The program should have crashed at this point.
-  }
-}
-
-// Convenience function that returns true if the supplied value is in range
-// for the destination type.
-template <typename Dst, typename Src>
-inline bool IsValueInRangeForNumericType(Src value) {
-  return internal::RangeCheck<Dst>(value) == internal::TYPE_VALID;
-}
-
-// checked_cast<> is analogous to static_cast<> for numeric types,
-// except that it CHECKs that the specified numeric conversion will not
-// overflow or underflow. NaN source will always trigger a CHECK.
-template <typename Dst, typename Src>
-inline Dst checked_cast(Src value) {
-  Check(IsValueInRangeForNumericType<Dst>(value));
-  return static_cast<Dst>(value);
-}
-
-// saturated_cast<> is analogous to static_cast<> for numeric types, except
-// that the specified numeric conversion will saturate rather than overflow or
-// underflow. NaN assignment to an integral will trigger a CHECK condition.
-template <typename Dst, typename Src>
-inline Dst saturated_cast(Src value) {
-  // Optimization for floating point values, which already saturate.
-  if (std::numeric_limits<Dst>::is_iec559)
-    return static_cast<Dst>(value);
-
-  switch (internal::RangeCheck<Dst>(value)) {
-    case internal::TYPE_VALID:
-      return static_cast<Dst>(value);
-
-    case internal::TYPE_UNDERFLOW:
-      return std::numeric_limits<Dst>::min();
-
-    case internal::TYPE_OVERFLOW:
-      return std::numeric_limits<Dst>::max();
-
-    // Should fail only on attempting to assign NaN to a saturated integer.
-    case internal::TYPE_INVALID:
-      Check(false);
-      return std::numeric_limits<Dst>::max();
-  }
-
-  Check(false); // NOTREACHED();
-  return static_cast<Dst>(value);
-}
-
-}  // namespace rtc
-
-#endif  // WEBRTC_BASE_SAFE_CONVERSIONS_H_