Remove //net (except for Android test stuff) and sdch

net/http/http_vary_data.cc

-// Copyright (c) 2012 The Chromium Authors. All rights reserved.
-// Use of this source code is governed by a BSD-style license that can be
-// found in the LICENSE file.
-
-#include "net/http/http_vary_data.h"
-
-#include <stdlib.h>
-
-#include "base/pickle.h"
-#include "base/strings/string_util.h"
-#include "net/http/http_request_headers.h"
-#include "net/http/http_request_info.h"
-#include "net/http/http_response_headers.h"
-#include "net/http/http_util.h"
-
-namespace net {
-
-HttpVaryData::HttpVaryData() : is_valid_(false) {
-}
-
-bool HttpVaryData::Init(const HttpRequestInfo& request_info,
-                        const HttpResponseHeaders& response_headers) {
-  base::MD5Context ctx;
-  base::MD5Init(&ctx);
-
-  is_valid_ = false;
-  bool processed_header = false;
-
-  // Feed the MD5 context in the order of the Vary header enumeration.  If the
-  // Vary header repeats a header name, then that's OK.
-  //
-  // If the Vary header contains '*' then we should not construct any vary data
-  // since it is all usurped by a '*'.  See section 13.6 of RFC 2616.
-  //
-  void* iter = NULL;
-  std::string name = "vary", request_header;
-  while (response_headers.EnumerateHeader(&iter, name, &request_header)) {
-    if (request_header == "*")
-      return false;
-    AddField(request_info, request_header, &ctx);
-    processed_header = true;
-  }
-
-  // Add an implicit 'Vary: cookie' header to any redirect to avoid redirect
-  // loops which may result from redirects that are incorrectly marked as
-  // cachable by the server.  Unfortunately, other browsers do not cache
-  // redirects that result from requests containing a cookie header.  We are
-  // treading on untested waters here, so we want to be extra careful to make
-  // sure we do not end up with a redirect loop served from cache.
-  //
-  // If there is an explicit 'Vary: cookie' header, then we will just end up
-  // digesting the cookie header twice.  Not a problem.
-  //
-  std::string location;
-  if (response_headers.IsRedirect(&location)) {
-    AddField(request_info, "cookie", &ctx);
-    processed_header = true;
-  }
-
-  if (!processed_header)
-    return false;
-
-  base::MD5Final(&request_digest_, &ctx);
-  return is_valid_ = true;
-}
-
-bool HttpVaryData::InitFromPickle(PickleIterator* iter) {
-  is_valid_ = false;
-  const char* data;
-  if (iter->ReadBytes(&data, sizeof(request_digest_))) {
-    memcpy(&request_digest_, data, sizeof(request_digest_));
-    return is_valid_ = true;
-  }
-  return false;
-}
-
-void HttpVaryData::Persist(Pickle* pickle) const {
-  DCHECK(is_valid());
-  pickle->WriteBytes(&request_digest_, sizeof(request_digest_));
-}
-
-bool HttpVaryData::MatchesRequest(
-    const HttpRequestInfo& request_info,
-    const HttpResponseHeaders& cached_response_headers) const {
-  HttpVaryData new_vary_data;
-  if (!new_vary_data.Init(request_info, cached_response_headers)) {
-    // This shouldn't happen provided the same response headers passed here
-    // were also used when initializing |this|.
-    NOTREACHED();
-    return false;
-  }
-  return memcmp(&new_vary_data.request_digest_, &request_digest_,
-                sizeof(request_digest_)) == 0;
-}
-
-// static
-std::string HttpVaryData::GetRequestValue(
-    const HttpRequestInfo& request_info,
-    const std::string& request_header) {
-  // Unfortunately, we do not have access to all of the request headers at this
-  // point.  Most notably, we do not have access to an Authorization header if
-  // one will be added to the request.
-
-  std::string result;
-  if (request_info.extra_headers.GetHeader(request_header, &result))
-    return result;
-
-  return std::string();
-}
-
-// static
-void HttpVaryData::AddField(const HttpRequestInfo& request_info,
-                            const std::string& request_header,
-                            base::MD5Context* ctx) {
-  std::string request_value = GetRequestValue(request_info, request_header);
-
-  // Append a character that cannot appear in the request header line so that we
-  // protect against case where the concatenation of two request headers could
-  // look the same for a variety of values for the individual request headers.
-  // For example, "foo: 12\nbar: 3" looks like "foo: 1\nbar: 23" otherwise.
-  request_value.append(1, '\n');
-
-  base::MD5Update(ctx, request_value);
-}
-
-}  // namespace net