Separate ContentSettingsClient out from LocalFrameClient

third_party/WebKit/Source/web/ContextFeaturesClientImpl.cpp

Index: third_party/WebKit/Source/web/ContextFeaturesClientImpl.cpp
diff --git a/third_party/WebKit/Source/web/ContextFeaturesClientImpl.cpp b/third_party/WebKit/Source/web/ContextFeaturesClientImpl.cpp
deleted file mode 100644
index c372838aac87c05ec645de62658cb44f5437a0f4..0000000000000000000000000000000000000000
--- a/third_party/WebKit/Source/web/ContextFeaturesClientImpl.cpp
+++ /dev/null
@@ -1,150 +0,0 @@
-/*
- * Copyright (C) 2012 Google Inc. All rights reserved.
- *
- * 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 "web/ContextFeaturesClientImpl.h"
-
-#include "core/dom/Document.h"
-#include "platform/weborigin/SecurityOrigin.h"
-#include "public/web/WebContentSettingsClient.h"
-#include "public/web/WebDocument.h"
-#include "web/WebLocalFrameImpl.h"
-
-namespace blink {
-
-class ContextFeaturesCache final
-    : public GarbageCollectedFinalized<ContextFeaturesCache>,
-      public Supplement<Document> {
-  USING_GARBAGE_COLLECTED_MIXIN(ContextFeaturesCache);
-
- public:
-  class Entry {
-   public:
-    enum Value { IsEnabled, IsDisabled, NeedsRefresh };
-
-    Entry() : m_value(NeedsRefresh), m_defaultValue(false) {}
-
-    bool isEnabled() const {
-      DCHECK_NE(m_value, NeedsRefresh);
-      return m_value == IsEnabled;
-    }
-
-    void set(bool value, bool defaultValue) {
-      m_value = value ? IsEnabled : IsDisabled;
-      m_defaultValue = defaultValue;
-    }
-
-    bool needsRefresh(bool defaultValue) const {
-      return m_value == NeedsRefresh || m_defaultValue != defaultValue;
-    }
-
-   private:
-    Value m_value;
-    bool m_defaultValue;  // Needs to be traked as a part of the signature since
-                          // it can be changed dynamically.
-  };
-
-  static const char* supplementName();
-  static ContextFeaturesCache& from(Document&);
-
-  Entry& entryFor(ContextFeatures::FeatureType type) {
-    size_t index = static_cast<size_t>(type);
-    SECURITY_DCHECK(index < ContextFeatures::FeatureTypeSize);
-    return m_entries[index];
-  }
-
-  void validateAgainst(Document*);
-
-  DEFINE_INLINE_VIRTUAL_TRACE() { Supplement<Document>::trace(visitor); }
-
- private:
-  explicit ContextFeaturesCache(Document& document)
-      : Supplement<Document>(document) {}
-
-  String m_domain;
-  Entry m_entries[ContextFeatures::FeatureTypeSize];
-};
-
-const char* ContextFeaturesCache::supplementName() {
-  return "ContextFeaturesCache";
-}
-
-ContextFeaturesCache& ContextFeaturesCache::from(Document& document) {
-  ContextFeaturesCache* cache = static_cast<ContextFeaturesCache*>(
-      Supplement<Document>::from(document, supplementName()));
-  if (!cache) {
-    cache = new ContextFeaturesCache(document);
-    Supplement<Document>::provideTo(document, supplementName(), cache);
-  }
-
-  return *cache;
-}
-
-void ContextFeaturesCache::validateAgainst(Document* document) {
-  String currentDomain = document->getSecurityOrigin()->domain();
-  if (currentDomain == m_domain)
-    return;
-  m_domain = currentDomain;
-  for (size_t i = 0; i < ContextFeatures::FeatureTypeSize; ++i)
-    m_entries[i] = Entry();
-}
-
-bool ContextFeaturesClientImpl::isEnabled(Document* document,
-                                          ContextFeatures::FeatureType type,
-                                          bool defaultValue) {
-  DCHECK(document);
-  ContextFeaturesCache::Entry& cache =
-      ContextFeaturesCache::from(*document).entryFor(type);
-  if (cache.needsRefresh(defaultValue))
-    cache.set(askIfIsEnabled(document, type, defaultValue), defaultValue);
-  return cache.isEnabled();
-}
-
-void ContextFeaturesClientImpl::urlDidChange(Document* document) {
-  DCHECK(document);
-  ContextFeaturesCache::from(*document).validateAgainst(document);
-}
-
-bool ContextFeaturesClientImpl::askIfIsEnabled(
-    Document* document,
-    ContextFeatures::FeatureType type,
-    bool defaultValue) {
-  WebLocalFrameImpl* frame = WebLocalFrameImpl::fromFrame(document->frame());
-  if (!frame || !frame->contentSettingsClient())
-    return defaultValue;
-
-  switch (type) {
-    case ContextFeatures::MutationEvents:
-      return frame->contentSettingsClient()->allowMutationEvents(defaultValue);
-    default:
-      return defaultValue;
-  }
-}
-
-}  // namespace blink