Revert https://codereview.chromium.org/1291903002 (protobuf roll).

third_party/protobuf/src/google/protobuf/stubs/bytestream.cc

Index: third_party/protobuf/src/google/protobuf/stubs/bytestream.cc
diff --git a/third_party/protobuf/src/google/protobuf/stubs/bytestream.cc b/third_party/protobuf/src/google/protobuf/stubs/bytestream.cc
deleted file mode 100644
index f4af6a50abef0a513e5ad41a3c72990d94b541ac..0000000000000000000000000000000000000000
--- a/third_party/protobuf/src/google/protobuf/stubs/bytestream.cc
+++ /dev/null
@@ -1,196 +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.
-
-#include <google/protobuf/stubs/bytestream.h>
-
-#include <string.h>
-#include <algorithm>
-
-namespace google {
-namespace protobuf {
-namespace strings {
-
-void ByteSource::CopyTo(ByteSink* sink, size_t n) {
-  while (n > 0) {
-    StringPiece fragment = Peek();
-    if (fragment.empty()) {
-      GOOGLE_LOG(DFATAL) << "ByteSource::CopyTo() overran input.";
-      break;
-    }
-    std::size_t fragment_size = std::min<std::size_t>(n, fragment.size());
-    sink->Append(fragment.data(), fragment_size);
-    Skip(fragment_size);
-    n -= fragment_size;
-  }
-}
-
-void ByteSink::Flush() {}
-
-void UncheckedArrayByteSink::Append(const char* data, size_t n) {
-  if (data != dest_) {
-    // Catch cases where the pointer returned by GetAppendBuffer() was modified.
-    GOOGLE_DCHECK(!(dest_ <= data && data < (dest_ + n)))
-        << "Append() data[] overlaps with dest_[]";
-    memcpy(dest_, data, n);
-  }
-  dest_ += n;
-}
-
-CheckedArrayByteSink::CheckedArrayByteSink(char* outbuf, size_t capacity)
-    : outbuf_(outbuf), capacity_(capacity), size_(0), overflowed_(false) {
-}
-
-void CheckedArrayByteSink::Append(const char* bytes, size_t n) {
-  size_t available = capacity_ - size_;
-  if (n > available) {
-    n = available;
-    overflowed_ = true;
-  }
-  if (n > 0 && bytes != (outbuf_ + size_)) {
-    // Catch cases where the pointer returned by GetAppendBuffer() was modified.
-    GOOGLE_DCHECK(!(outbuf_ <= bytes && bytes < (outbuf_ + capacity_)))
-        << "Append() bytes[] overlaps with outbuf_[]";
-    memcpy(outbuf_ + size_, bytes, n);
-  }
-  size_ += n;
-}
-
-GrowingArrayByteSink::GrowingArrayByteSink(size_t estimated_size)
-    : capacity_(estimated_size),
-      buf_(new char[estimated_size]),
-      size_(0) {
-}
-
-GrowingArrayByteSink::~GrowingArrayByteSink() {
-  delete[] buf_;  // Just in case the user didn't call GetBuffer.
-}
-
-void GrowingArrayByteSink::Append(const char* bytes, size_t n) {
-  size_t available = capacity_ - size_;
-  if (bytes != (buf_ + size_)) {
-    // Catch cases where the pointer returned by GetAppendBuffer() was modified.
-    // We need to test for this before calling Expand() which may reallocate.
-    GOOGLE_DCHECK(!(buf_ <= bytes && bytes < (buf_ + capacity_)))
-        << "Append() bytes[] overlaps with buf_[]";
-  }
-  if (n > available) {
-    Expand(n - available);
-  }
-  if (n > 0 && bytes != (buf_ + size_)) {
-    memcpy(buf_ + size_, bytes, n);
-  }
-  size_ += n;
-}
-
-char* GrowingArrayByteSink::GetBuffer(size_t* nbytes) {
-  ShrinkToFit();
-  char* b = buf_;
-  *nbytes = size_;
-  buf_ = NULL;
-  size_ = capacity_ = 0;
-  return b;
-}
-
-void GrowingArrayByteSink::Expand(size_t amount) {  // Expand by at least 50%.
-  size_t new_capacity = std::max(capacity_ + amount, (3 * capacity_) / 2);
-  char* bigger = new char[new_capacity];
-  memcpy(bigger, buf_, size_);
-  delete[] buf_;
-  buf_ = bigger;
-  capacity_ = new_capacity;
-}
-
-void GrowingArrayByteSink::ShrinkToFit() {
-  // Shrink only if the buffer is large and size_ is less than 3/4
-  // of capacity_.
-  if (capacity_ > 256 && size_ < (3 * capacity_) / 4) {
-    char* just_enough = new char[size_];
-    memcpy(just_enough, buf_, size_);
-    delete[] buf_;
-    buf_ = just_enough;
-    capacity_ = size_;
-  }
-}
-
-void StringByteSink::Append(const char* data, size_t n) {
-  dest_->append(data, n);
-}
-
-size_t ArrayByteSource::Available() const {
-  return input_.size();
-}
-
-StringPiece ArrayByteSource::Peek() {
-  return input_;
-}
-
-void ArrayByteSource::Skip(size_t n) {
-  GOOGLE_DCHECK_LE(n, input_.size());
-  input_.remove_prefix(n);
-}
-
-LimitByteSource::LimitByteSource(ByteSource *source, size_t limit)
-  : source_(source),
-    limit_(limit) {
-}
-
-size_t LimitByteSource::Available() const {
-  size_t available = source_->Available();
-  if (available > limit_) {
-    available = limit_;
-  }
-
-  return available;
-}
-
-StringPiece LimitByteSource::Peek() {
-  StringPiece piece(source_->Peek());
-  if (piece.size() > limit_) {
-    piece.set(piece.data(), limit_);
-  }
-
-  return piece;
-}
-
-void LimitByteSource::Skip(size_t n) {
-  GOOGLE_DCHECK_LE(n, limit_);
-  source_->Skip(n);
-  limit_ -= n;
-}
-
-void LimitByteSource::CopyTo(ByteSink *sink, size_t n) {
-  GOOGLE_DCHECK_LE(n, limit_);
-  source_->CopyTo(sink, n);
-  limit_ -= n;
-}
-
-}  // namespace strings
-}  // namespace protobuf
-}  // namespace google