Remove support for -webkit-canvas and Document.getCSSCanvasContext.

third_party/WebKit/Source/core/css/CSSCanvasValue.cpp

Index: third_party/WebKit/Source/core/css/CSSCanvasValue.cpp
diff --git a/third_party/WebKit/Source/core/css/CSSCanvasValue.cpp b/third_party/WebKit/Source/core/css/CSSCanvasValue.cpp
deleted file mode 100644
index baadc11970946271bde66b27f6e65a1136b0d813..0000000000000000000000000000000000000000
--- a/third_party/WebKit/Source/core/css/CSSCanvasValue.cpp
+++ /dev/null
@@ -1,111 +0,0 @@
-/*
- * Copyright (C) 2008 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.
- * 2. Redistributions in binary form must reproduce the above copyright
- *    notice, this list of conditions and the following disclaimer in the
- *    documentation and/or other materials provided with the distribution.
- *
- * THIS SOFTWARE IS PROVIDED BY APPLE COMPUTER, INC. ``AS IS'' AND ANY
- * EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
- * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
- * PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL APPLE COMPUTER, INC. OR
- * CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
- * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
- * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; 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.
- */
-
-#include "config.h"
-#include "core/css/CSSCanvasValue.h"
-
-#include "core/frame/UseCounter.h"
-#include "core/layout/LayoutObject.h"
-#include "wtf/text/StringBuilder.h"
-
-namespace blink {
-
-CSSCanvasValue::~CSSCanvasValue()
-{
-#if !ENABLE(OILPAN)
-    if (m_element)
-        m_element->removeObserver(m_canvasObserver.get());
-#endif
-}
-
-String CSSCanvasValue::customCSSText() const
-{
-    StringBuilder result;
-    result.appendLiteral("-webkit-canvas(");
-    result.append(m_name);
-    result.append(')');
-    return result.toString();
-}
-
-void CSSCanvasValue::canvasChanged(HTMLCanvasElement*, const FloatRect& changedRect)
-{
-    IntRect imageChangeRect = enclosingIntRect(changedRect);
-    for (const auto& curr : clients())
-        const_cast<LayoutObject*>(curr.key)->imageChanged(static_cast<WrappedImagePtr>(this), &imageChangeRect);
-}
-
-void CSSCanvasValue::canvasResized(HTMLCanvasElement*)
-{
-    for (const auto& curr : clients())
-        const_cast<LayoutObject*>(curr.key)->imageChanged(static_cast<WrappedImagePtr>(this));
-}
-
-#if !ENABLE(OILPAN)
-void CSSCanvasValue::canvasDestroyed(HTMLCanvasElement* element)
-{
-    ASSERT_UNUSED(element, element == m_element);
-    m_element = nullptr;
-}
-#endif
-
-IntSize CSSCanvasValue::fixedSize(const LayoutObject* layoutObject)
-{
-    if (HTMLCanvasElement* elt = element(&layoutObject->document()))
-        return IntSize(elt->width(), elt->height());
-    return IntSize();
-}
-
-HTMLCanvasElement* CSSCanvasValue::element(Document* document)
-{
-    if (!m_element) {
-        m_element = &document->getCSSCanvasElement(m_name);
-        m_element->addObserver(m_canvasObserver.get());
-    }
-    return m_element;
-}
-
-PassRefPtr<Image> CSSCanvasValue::image(const LayoutObject* layoutObject, const IntSize& /*size*/)
-{
-    ASSERT(clients().contains(layoutObject));
-    HTMLCanvasElement* elt = element(&layoutObject->document());
-    if (!elt)
-        return nullptr;
-    UseCounter::count(layoutObject->document(), UseCounter::WebkitCanvas);
-    return elt->copiedImage(FrontBuffer, PreferNoAcceleration);
-}
-
-bool CSSCanvasValue::equals(const CSSCanvasValue& other) const
-{
-    return m_name == other.m_name;
-}
-
-DEFINE_TRACE_AFTER_DISPATCH(CSSCanvasValue)
-{
-    visitor->trace(m_canvasObserver);
-    visitor->trace(m_element);
-    CSSImageGeneratorValue::traceAfterDispatch(visitor);
-}
-
-} // namespace blink