Rework timeline/frame scheduling logic for SVGImage

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

Index: third_party/WebKit/Source/core/css/CSSCrossfadeValue.cpp
diff --git a/third_party/WebKit/Source/core/css/CSSCrossfadeValue.cpp b/third_party/WebKit/Source/core/css/CSSCrossfadeValue.cpp
index 7b399d4d31cf00cb68767f44bde5271fd7d8a60e..7f90cf8f0f02b5ac4389ec5c3d26974b2f8198fb 100644
--- a/third_party/WebKit/Source/core/css/CSSCrossfadeValue.cpp
+++ b/third_party/WebKit/Source/core/css/CSSCrossfadeValue.cpp
@@ -249,12 +249,28 @@ void CSSCrossfadeValue::crossfadeChanged(const IntRect&)
     }
 }
 
+bool CSSCrossfadeValue::willRenderImage() const
+{
+    for (const auto& curr : clients()) {
+        if (const_cast<LayoutObject*>(curr.key)->willRenderImage())
+            return true;
+    }
+    return false;
+}
+
 void CSSCrossfadeValue::CrossfadeSubimageObserverProxy::imageChanged(ImageResource*, const IntRect* rect)
 {
     if (m_ready)
         m_ownerValue->crossfadeChanged(*rect);
 }
 
+bool CSSCrossfadeValue::CrossfadeSubimageObserverProxy::willRenderImage()
+{
+    // If the images are not ready/loaded we won't paint them. If the images
+    // are ready then ask the clients.
+    return m_ready && m_ownerValue->willRenderImage();
+}
+
 bool CSSCrossfadeValue::hasFailedOrCanceledSubresources() const
 {
     if (m_cachedFromImage && m_cachedFromImage->loadFailedOrCanceled())