Make the constructor of a LayoutRect from an IntRect explicit.

Source/core/dom/Document.cpp

Index: Source/core/dom/Document.cpp
diff --git a/Source/core/dom/Document.cpp b/Source/core/dom/Document.cpp
index 200d6f7d7fab6911e31ca84f5511a07c6e02197d..ba0bcd4548e397fff549bff9e34a3f969233fed5 100644
--- a/Source/core/dom/Document.cpp
+++ b/Source/core/dom/Document.cpp
@@ -5162,7 +5162,7 @@ void Document::adjustFloatQuadsForScrollAndAbsoluteZoom(Vector<FloatQuad>& quads
     if (!view())
         return;
 
-    LayoutRect visibleContentRect = view()->visualViewportRect();
+    LayoutRect visibleContentRect(view()->visualViewportRect());
     for (size_t i = 0; i < quads.size(); ++i) {
         quads[i].move(-FloatSize(visibleContentRect.x().toFloat(), visibleContentRect.y().toFloat()));
         adjustFloatQuadForAbsoluteZoom(quads[i], renderer);
@@ -5174,7 +5174,7 @@ void Document::adjustFloatRectForScrollAndAbsoluteZoom(FloatRect& rect, LayoutOb
     if (!view())
         return;
 
-    LayoutRect visibleContentRect = view()->visualViewportRect();
+    LayoutRect visibleContentRect(view()->visualViewportRect());
     rect.move(-FloatSize(visibleContentRect.x().toFloat(), visibleContentRect.y().toFloat()));
     adjustFloatRectForAbsoluteZoom(rect, renderer);
 }