Translate viewport related meta tags into @viewport descriptors as suggested by the CSS Device Adap…

Source/core/dom/ViewportArguments.h

 /*
  * Copyright (C) 1999 Lars Knoll (knoll@kde.org)
  *           (C) 1999 Antti Koivisto (koivisto@kde.org)
  *           (C) 2001 Dirk Mueller (mueller@kde.org)
  *           (C) 2006 Alexey Proskuryakov (ap@webkit.org)
  * Copyright (C) 2004, 2005, 2006, 2007, 2008 Apple Inc. All rights reserved.
  * Copyright (C) 2008 Torch Mobile Inc. All rights reserved. (http://www.torchmobile.com/)
  * Copyright (C) 2010 Nokia Corporation and/or its subsidiary(-ies)
  * Copyright (C) 2012-2013 Intel Corporation. All rights reserved.
  *
@@ skipping 18 matching lines @@
 #define ViewportArguments_h
 
 #include "core/page/PageScaleConstraints.h"
 #include "core/platform/graphics/FloatSize.h"
 #include "wtf/Forward.h"
 
 namespace WebCore {
 
 class Document;
 
-enum ViewportErrorCode {
-    UnrecognizedViewportArgumentKeyError,
-    UnrecognizedViewportArgumentValueError,
-    TruncatedViewportArgumentValueError,
-    MaximumScaleTooLargeError,
-    TargetDensityDpiUnsupported
-};
-
 struct ViewportArguments {
 
-    enum Type {
-        // These are ordered in increasing importance.
-        Implicit,
-        XHTMLMobileProfile,
-        HandheldFriendlyMeta,
-        MobileOptimizedMeta,
-        ViewportMeta,
-        CSSDeviceAdaptation
-    } type;
-
     enum {
         ValueAuto = -1,
-        ValueDeviceWidth = -2,
-        ValueDeviceHeight = -3,
         ValuePortrait = -4,
         ValueLandscape = -5,
         ValueDeviceDPI = -6,
         ValueLowDPI = -7,
         ValueMediumDPI = -8,
         ValueHighDPI = -9,
         ValueExtendToZoom = -10
     };
 
-    ViewportArguments(Type type = Implicit)
-        : type(type)
-        , width(ValueAuto)
-        , minWidth(ValueAuto)
+    ViewportArguments()
+        : minWidth(ValueAuto)
         , maxWidth(ValueAuto)
-        , height(ValueAuto)
         , minHeight(ValueAuto)
         , maxHeight(ValueAuto)
         , zoom(ValueAuto)
         , minZoom(ValueAuto)
         , maxZoom(ValueAuto)
         , userZoom(ValueAuto)
         , orientation(ValueAuto)
         , deprecatedTargetDensityDPI(ValueAuto)
     {
     }
 
-    // All arguments are in CSS units.
-    PageScaleConstraints resolve(const FloatSize& initialViewportSize, int defaultWidth) const;
+    PageScaleConstraints resolve(const FloatSize& initialViewportSizeInCSSUnits) const;
 
-    float width;
     float minWidth;
     float maxWidth;
-    float height;
     float minHeight;
     float maxHeight;
     float zoom;
     float minZoom;
     float maxZoom;
     float userZoom;
     float orientation;
     float deprecatedTargetDensityDPI; // Only used for Android WebView
 
     bool operator==(const ViewportArguments& other) const
     {
-        // Used for figuring out whether to reset the viewport or not,
-        // thus we are not taking type into account.
-        return width == other.width
-            && minWidth == other.minWidth
+        return minWidth == other.minWidth
             && maxWidth == other.maxWidth
-            && height == other.height
             && minHeight == other.minHeight
             && maxHeight == other.maxHeight
             && zoom == other.zoom
             && minZoom == other.minZoom
             && maxZoom == other.maxZoom
             && userZoom == other.userZoom
             && orientation == other.orientation
             && deprecatedTargetDensityDPI == other.deprecatedTargetDensityDPI;
     }
 
     bool operator!=(const ViewportArguments& other) const
     {
         return !(*this == other);
     }
 };
 
-void setViewportFeature(const String& keyString, const String& valueString, Document*, void* data);
-void reportViewportWarning(Document*, ViewportErrorCode, const String& replacement1, const String& replacement2);
-
 } // namespace WebCore
 
 #endif // ViewportArguments_h