ASSERT -> RELEASE_ASSERT for investigation of issue 466793

Source/platform/graphics/Canvas2DLayerBridge.cpp

Index: Source/platform/graphics/Canvas2DLayerBridge.cpp
diff --git a/Source/platform/graphics/Canvas2DLayerBridge.cpp b/Source/platform/graphics/Canvas2DLayerBridge.cpp
index a44254c41b5313410576d54207fc2ae432a9f873..628517ab9366fc0d6ae60848593901decaf31f79 100644
--- a/Source/platform/graphics/Canvas2DLayerBridge.cpp
+++ b/Source/platform/graphics/Canvas2DLayerBridge.cpp
@@ -119,7 +119,8 @@ Canvas2DLayerBridge::Canvas2DLayerBridge(PassOwnPtr<WebGraphicsContext3DProvider
 Canvas2DLayerBridge::~Canvas2DLayerBridge()
 {
     ASSERT(m_destructionInProgress);
-    ASSERT(!Canvas2DLayerManager::get().isInList(this));
+    // TODO(junov): This can go back to a regular ASSERT once crbug.com/466793 is resolved.
+    RELEASE_ASSERT(!Canvas2DLayerManager::get().isInList(this));
     if (m_canvas)
         m_canvas->setNotificationClient(nullptr);
     m_layer.clear();