Add support for 'display-mode' MQ defined in Manifest spec

Source/core/testing/InternalSettings.h

 /*
  * Copyright (C) 2012 Google Inc. All rights reserved.
  * Copyright (C) 2013 Apple 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:
  *
  * 1.  Redistributions of source code must retain the above copyright
  *     notice, this list of conditions and the following disclaimer.
@@ skipping 10 matching lines @@
  * 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.
  */
 
 #ifndef InternalSettings_h
 #define InternalSettings_h
 
 #include "core/InternalSettingsGenerated.h"
+#include "core/css/DisplayModeProperties.h"
 #include "core/editing/EditingBehaviorTypes.h"
 #include "platform/geometry/IntSize.h"
 #include "platform/graphics/ImageAnimationPolicy.h"
 #include "platform/heap/Handle.h"
 #include "wtf/PassRefPtr.h"
 #include "wtf/RefCounted.h"
 #include "wtf/text/WTFString.h"
 
 namespace blink {
 
@@ skipping 17 matching lines @@
         void restoreTo(Settings*);
 
         bool m_originalAuthorShadowDOMForAnyElementEnabled;
         bool m_originalCSP;
         bool m_originalOverlayScrollbarsEnabled;
         EditingBehaviorType m_originalEditingBehavior;
         bool m_originalTextAutosizingEnabled;
         IntSize m_originalTextAutosizingWindowSizeOverride;
         float m_originalAccessibilityFontScaleFactor;
         String m_originalMediaTypeOverride;
+        DisplayMode m_originalDisplayModeOverride;
         bool m_originalMockScrollbarsEnabled;
         bool m_originalMockGestureTapHighlightsEnabled;
         bool m_langAttributeAwareFormControlUIEnabled;
         bool m_imagesEnabled;
         String m_defaultVideoPosterURL;
         bool m_originalLayerSquashingEnabled;
         bool m_originalPseudoClassesInMatchingCriteriaInAuthorShadowTreesEnabled;
         bool m_originalImageColorProfilesEnabled;
         ImageAnimationPolicy m_originalImageAnimationPolicy;
     };
@@ skipping 16 matching lines @@
     void setSansSerifFontFamily(const AtomicString& family, const String& script, ExceptionState&);
     void setFixedFontFamily(const AtomicString& family, const String& script, ExceptionState&);
     void setCursiveFontFamily(const AtomicString& family, const String& script, ExceptionState&);
     void setFantasyFontFamily(const AtomicString& family, const String& script, ExceptionState&);
     void setPictographFontFamily(const AtomicString& family, const String& script, ExceptionState&);
 
     void setDefaultVideoPosterURL(const String& url, ExceptionState&);
     void setEditingBehavior(const String&, ExceptionState&);
     void setImagesEnabled(bool, ExceptionState&);
     void setMediaTypeOverride(const String& mediaType, ExceptionState&);
+    void setDisplayModeOverride(const String& displayMode, ExceptionState&);
     void setMockScrollbarsEnabled(bool, ExceptionState&);
     void setMockGestureTapHighlightsEnabled(bool, ExceptionState&);
     void setTextAutosizingEnabled(bool, ExceptionState&);
     void setAccessibilityFontScaleFactor(float fontScaleFactor, ExceptionState&);
     void setTextAutosizingWindowSizeOverride(int width, int height, ExceptionState&);
     void setViewportEnabled(bool, ExceptionState&);
 
     // FIXME: The following are RuntimeEnabledFeatures and likely
     // cannot be changed after process start. These setters should
     // be removed or moved onto internals.runtimeFlags:
@@ skipping 19 matching lines @@
     Page* page() const { return m_page; }
     static const char* supplementName();
 
     RawPtrWillBeWeakMember<Page> m_page;
     Backup m_backup;
 };
 
 } // namespace blink
 
 #endif // InternalSettings_h