Use EphemeralRange instead of Range in Range::isNodeFullyContainded

third_party/WebKit/Source/core/input/MouseEventManager.cpp

Index: third_party/WebKit/Source/core/input/MouseEventManager.cpp
diff --git a/third_party/WebKit/Source/core/input/MouseEventManager.cpp b/third_party/WebKit/Source/core/input/MouseEventManager.cpp
index 85f6eaecd3145df12c4a08e0afed61da5a5e9eff..d6af4c624f760dfddd6bdcde4c30b852e694082c 100644
--- a/third_party/WebKit/Source/core/input/MouseEventManager.cpp
+++ b/third_party/WebKit/Source/core/input/MouseEventManager.cpp
@@ -431,12 +431,11 @@ WebInputEventResult MouseEventManager::handleMouseFocus(
       m_frame->selection()
           .computeVisibleSelectionInDOMTreeDeprecated()
           .isRange()) {
-    // TODO(yosin) We should not create |Range| object for calling
-    // |isNodeFullyContained()|.
-    if (createRange(m_frame->selection()
-                        .computeVisibleSelectionInDOMTreeDeprecated()
-                        .toNormalizedEphemeralRange())
-            ->isNodeFullyContained(*element) &&
+    const EphemeralRange& range =
+        m_frame->selection()
+            .computeVisibleSelectionInDOMTreeDeprecated()
+            .toNormalizedEphemeralRange();
+    if (isNodeFullyContained(range, *element) &&
         element->isDescendantOf(m_frame->document()->focusedElement()))
       return WebInputEventResult::NotHandled;
   }