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Unified Diff: content/renderer/media/cache_util.cc

Issue 495353003: Move WebMediaPlayerImpl and its dependencies to media/blink. (Closed) Base URL: https://chromium.googlesource.com/chromium/src.git@master
Patch Set: . Created 6 years, 3 months ago
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Index: content/renderer/media/cache_util.cc
diff --git a/content/renderer/media/cache_util.cc b/content/renderer/media/cache_util.cc
deleted file mode 100644
index d79e69230baa78aa9f8634de6a8040214b4e399e..0000000000000000000000000000000000000000
--- a/content/renderer/media/cache_util.cc
+++ /dev/null
@@ -1,87 +0,0 @@
-// Copyright 2013 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 "content/renderer/media/cache_util.h"
-
-#include <string>
-
-#include "base/strings/string_number_conversions.h"
-#include "base/strings/string_util.h"
-#include "base/time/time.h"
-#include "net/http/http_util.h"
-#include "net/http/http_version.h"
-#include "third_party/WebKit/public/platform/WebCString.h"
-#include "third_party/WebKit/public/platform/WebString.h"
-#include "third_party/WebKit/public/platform/WebURLResponse.h"
-
-using base::Time;
-using base::TimeDelta;
-using net::HttpVersion;
-using blink::WebURLResponse;
-
-namespace content {
-
-enum { kHttpOK = 200, kHttpPartialContent = 206 };
-
-uint32 GetReasonsForUncacheability(const WebURLResponse& response) {
- uint32 reasons = 0;
- const int code = response.httpStatusCode();
- const int version = response.httpVersion();
- const HttpVersion http_version =
- version == WebURLResponse::HTTP_1_1 ? HttpVersion(1, 1) :
- version == WebURLResponse::HTTP_1_0 ? HttpVersion(1, 0) :
- version == WebURLResponse::HTTP_0_9 ? HttpVersion(0, 9) :
- HttpVersion();
- if (code != kHttpOK && code != kHttpPartialContent)
- reasons |= kNoData;
- if (http_version < HttpVersion(1, 1) && code == kHttpPartialContent)
- reasons |= kPre11PartialResponse;
- if (code == kHttpPartialContent &&
- !net::HttpUtil::HasStrongValidators(
- http_version,
- response.httpHeaderField("etag").utf8(),
- response.httpHeaderField("Last-Modified").utf8(),
- response.httpHeaderField("Date").utf8())) {
- reasons |= kNoStrongValidatorOnPartialResponse;
- }
-
- std::string cache_control_header =
- response.httpHeaderField("cache-control").utf8();
- base::StringToLowerASCII(&cache_control_header);
- if (cache_control_header.find("no-cache") != std::string::npos)
- reasons |= kNoCache;
- if (cache_control_header.find("no-store") != std::string::npos)
- reasons |= kNoStore;
- if (cache_control_header.find("must-revalidate") != std::string::npos)
- reasons |= kHasMustRevalidate;
-
- const TimeDelta kMinimumAgeForUsefulness =
- TimeDelta::FromSeconds(3600); // Arbitrary value.
-
- const char kMaxAgePrefix[] = "max-age=";
- const size_t kMaxAgePrefixLen = arraysize(kMaxAgePrefix) - 1;
- if (cache_control_header.substr(0, kMaxAgePrefixLen) == kMaxAgePrefix) {
- int64 max_age_seconds;
- base::StringToInt64(
- base::StringPiece(cache_control_header.begin() + kMaxAgePrefixLen,
- cache_control_header.end()),
- &max_age_seconds);
- if (TimeDelta::FromSeconds(max_age_seconds) < kMinimumAgeForUsefulness)
- reasons |= kShortMaxAge;
- }
-
- Time date;
- Time expires;
- if (Time::FromString(response.httpHeaderField("Date").utf8().data(), &date) &&
- Time::FromString(response.httpHeaderField("Expires").utf8().data(),
- &expires) &&
- date > Time() && expires > Time() &&
- (expires - date) < kMinimumAgeForUsefulness) {
- reasons |= kExpiresTooSoon;
- }
-
- return reasons;
-}
-
-} // namespace content
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