Add CSS image-orientation: from-image

Source/core/css/parser/CSSPropertyParser.cpp

 /*
  * Copyright (C) 2003 Lars Knoll (knoll@kde.org)
  * Copyright (C) 2005 Allan Sandfeld Jensen (kde@carewolf.com)
  * Copyright (C) 2004, 2005, 2006, 2007, 2008, 2009, 2010, 2011, 2012 Apple Inc. All rights reserved.
  * Copyright (C) 2007 Nicholas Shanks <webkit@nickshanks.com>
  * Copyright (C) 2008 Eric Seidel <eric@webkit.org>
  * Copyright (C) 2009 Torch Mobile Inc. All rights reserved. (http://www.torchmobile.com/)
  * Copyright (C) 2012 Adobe Systems Incorporated. All rights reserved.
  * Copyright (C) 2012 Intel Corporation. All rights reserved.
  *
@@ skipping 627 matching lines @@
                 id = CSSValuePointer;
                 validPrimitive = true;
             } else if ((value->id >= CSSValueAuto && value->id <= CSSValueWebkitZoomOut) || value->id == CSSValueCopy || value->id == CSSValueNone)
                 validPrimitive = true;
         } else {
             ASSERT_NOT_REACHED();
             return false;
         }
         break;
     }
+    case CSSPropertyImageOrientation:
+        if (RuntimeEnabledFeatures::imageOrientationEnabled())
+            validPrimitive = value->id == CSSValueFromImage || (value->unit != CSSPrimitiveValue::CSS_NUMBER && validUnit(value, FAngle) && value->fValue == 0);
+        break;
 
     case CSSPropertyBackgroundBlendMode:
     case CSSPropertyBackgroundAttachment:
     case CSSPropertyBackgroundClip:
     case CSSPropertyWebkitBackgroundClip:
     case CSSPropertyWebkitBackgroundComposite:
     case CSSPropertyBackgroundImage:
     case CSSPropertyBackgroundOrigin:
     case CSSPropertyMaskSourceType:
     case CSSPropertyWebkitBackgroundOrigin:
@@ skipping 7494 matching lines @@
         }
     }
 
     if (!list->length())
         return nullptr;
 
     return list.release();
 }
 
 } // namespace blink