Remove <canvas>

sky/engine/core/dom/Element.cpp

 /*
  * Copyright (C) 1999 Lars Knoll (knoll@kde.org)
  *           (C) 1999 Antti Koivisto (koivisto@kde.org)
  *           (C) 2001 Peter Kelly (pmk@post.com)
  *           (C) 2001 Dirk Mueller (mueller@kde.org)
  *           (C) 2007 David Smith (catfish.man@gmail.com)
  * Copyright (C) 2004, 2005, 2006, 2007, 2008, 2009, 2010, 2012, 2013 Apple Inc. All rights reserved.
  *           (C) 2007 Eric Seidel (eric@webkit.org)
  *
  * This library is free software; you can redistribute it and/or
@@ skipping 50 matching lines @@
 #include "sky/engine/core/dom/shadow/InsertionPoint.h"
 #include "sky/engine/core/dom/shadow/ShadowRoot.h"
 #include "sky/engine/core/editing/FrameSelection.h"
 #include "sky/engine/core/editing/TextIterator.h"
 #include "sky/engine/core/editing/htmlediting.h"
 #include "sky/engine/core/events/EventDispatcher.h"
 #include "sky/engine/core/events/FocusEvent.h"
 #include "sky/engine/core/frame/FrameView.h"
 #include "sky/engine/core/frame/LocalFrame.h"
 #include "sky/engine/core/frame/Settings.h"
-#include "sky/engine/core/html/HTMLCanvasElement.h"
 #include "sky/engine/core/html/HTMLElement.h"
 #include "sky/engine/core/html/HTMLTemplateElement.h"
 #include "sky/engine/core/html/parser/HTMLDocumentParser.h"
 #include "sky/engine/core/html/parser/HTMLParserIdioms.h"
 #include "sky/engine/core/page/ChromeClient.h"
 #include "sky/engine/core/page/FocusController.h"
 #include "sky/engine/core/page/Page.h"
 #include "sky/engine/core/painting/PaintingCallback.h"
 #include "sky/engine/core/painting/PaintingTasks.h"
 #include "sky/engine/core/rendering/RenderLayer.h"
@@ skipping 51 matching lines @@
         return hasRareData() ? elementRareData()->tabIndex() : 0;
     return -1;
 }
 
 bool Element::rendererIsFocusable() const
 {
     // FIXME: These asserts should be in Node::isFocusable, but there are some
     // callsites like Document::setFocusedElement that would currently fail on
     // them. See crbug.com/251163
     if (!renderer()) {
-        // Elements in canvas fallback content are not rendered, but they are allowed to be
-        // focusable as long as their canvas is displayed and visible.
-        if (const HTMLCanvasElement* canvas = Traversal<HTMLCanvasElement>::firstAncestorOrSelf(*this))
-            return canvas->renderer();
         // We can't just use needsStyleRecalc() because if the node is in a
         // display:none tree it might say it needs style recalc but the whole
         // document is actually up to date.
         ASSERT(!document().childNeedsStyleRecalc());
     }
 
     // FIXME: Even if we are not visible, we might have a child that is visible.
     // Hyatt wants to fix that some day with a "has visible content" flag or the like.
     if (!renderer())
         return false;
@@ skipping 1363 matching lines @@
     // Ids stop style sharing if they show up in the stylesheets.
     if (hasID() && affectedByIdSelector(idForStyleResolution()))
         return false;
     // :active and :hover elements always make a chain towards the document node
     // and no siblings or cousins will have the same state. There's also only one
     // :focus element per scope so we don't need to attempt to share.
     if (isUserActionElement())
         return false;
     if (hasActiveAnimations())
         return false;
-    // Turn off style sharing for elements that can gain layers for reasons outside of the style system.
-    // See comments in RenderObject::setStyle().
-    // FIXME: Why does gaining a layer from outside the style system require disabling sharing?
-    if (isHTMLCanvasElement(*this))
-        return false;
     return true;
 }
 
 bool Element::affectedByAttributeSelector(const AtomicString& attributeName) const
 {
     if (attributeName.isEmpty())
         return false;
     if (treeScope().scopedStyleResolver().hasSelectorForAttribute(attributeName))
         return true;
     // Host rules could also have effects.
@@ skipping 20 matching lines @@
         return false;
     if (treeScope().scopedStyleResolver().hasSelectorForId(idValue))
         return true;
     // Host rules could also have effects.
     if (ShadowRoot* shadowRoot = this->shadowRoot())
         return shadowRoot->scopedStyleResolver().hasSelectorForId(idValue);
     return false;
 }
 
 } // namespace blink