Add CSS image-orientation: from-image

Source/core/layout/LayoutObject.cpp

Index: Source/core/layout/LayoutObject.cpp
diff --git a/Source/core/layout/LayoutObject.cpp b/Source/core/layout/LayoutObject.cpp
index e96113c8527123bac9e23bd9410e148474f9f1a9..170944915842b2e3ae76e420340ca5ab7c178268 100644
--- a/Source/core/layout/LayoutObject.cpp
+++ b/Source/core/layout/LayoutObject.cpp
@@ -2292,9 +2292,19 @@ bool LayoutObject::isRooted() const
 RespectImageOrientationEnum LayoutObject::shouldRespectImageOrientation() const
 {
     // Respect the image's orientation if it's being used as a full-page image or it's
-    // an <img> and the setting to respect it everywhere is set.
-    return document().isImageDocument()
-        || (document().settings() && document().settings()->shouldRespectImageOrientation() && isHTMLImageElement(node())) ? RespectImageOrientation : DoNotRespectImageOrientation;
+    // an <img> and image-orientation: from-image is set.
+    // FIXME: crbug.com/498233

[Noel Gordon, 2015/06/19 07:41:25]

// Respect the image's orientation if it's being used as a full-page image or
// it's an <img> and the setting to respect it everywhere is set or the <img>
// has image-orientation: from-image style. FIXME: crbug.com/498233

[rwlbuis, 2015/06/19 16:03:15]

Oh, missed this.... but it will be easy to fix.

[Noel Gordon, 2015/06/19 16:50:07]

Ok, let's do it next round.

+    bool respectOrientation = false;
+    if (document().isImageDocument()) {
+        respectOrientation = true;

[Noel Gordon, 2015/06/19 07:41:25]

nit: this code might read better of your preferred the early return

    if (document().isImageDocument())
        return RespectImageOrientation;

    if (!isHTMLImageElement(node())))
        return DoNotRespectImageOrientation;

    if (document().settings() &&
document().settings()->shouldRespectImageOrientation())
         ...

etc, etc.  Wanna try that?

[rwlbuis, 2015/06/19 16:03:15]

Great suggestion, I think it looks much clearer, done.

+    } else if (isHTMLImageElement(node())) {
+        if (document().settings() && document().settings()->shouldRespectImageOrientation())
+            respectOrientation = true;
+        else if (style() && style()->respectImageOrientation() == RespectImageOrientation)
+            respectOrientation = true;
+    }
+
+    return respectOrientation ? RespectImageOrientation : DoNotRespectImageOrientation;
 }
 
 LayoutObject* LayoutObject::container(const LayoutBoxModelObject* paintInvalidationContainer, bool* paintInvalidationContainerSkipped) const