Use const ref for LocalFrame::LocalFrameRoot and FrameTree::Top

third_party/WebKit/Source/web/tests/LinkSelectionTest.cpp

Index: third_party/WebKit/Source/web/tests/LinkSelectionTest.cpp
diff --git a/third_party/WebKit/Source/web/tests/LinkSelectionTest.cpp b/third_party/WebKit/Source/web/tests/LinkSelectionTest.cpp
index 97db44975b780be679fa16a003ed5e73e527b1b9..19dc916361d22a35effe112ea746f0fe67b38b9c 100644
--- a/third_party/WebKit/Source/web/tests/LinkSelectionTest.cpp
+++ b/third_party/WebKit/Source/web/tests/LinkSelectionTest.cpp
@@ -175,7 +175,7 @@ TEST_F(LinkSelectionTest, HandCursorDuringLinkDrag) {
                    kSendDownEvent);
   main_frame_->GetFrame()
       ->LocalFrameRoot()
-      ->GetEventHandler()
+      .GetEventHandler()
       .ScheduleCursorUpdate();
   testing::RunDelayedTasks(50);
   const auto& cursor =
@@ -188,7 +188,7 @@ TEST_F(LinkSelectionTest, CaretCursorOverLinkDuringSelection) {
                    WebInputEvent::kAltKey, kSendDownEvent);
   main_frame_->GetFrame()
       ->LocalFrameRoot()
-      ->GetEventHandler()
+      .GetEventHandler()
       .ScheduleCursorUpdate();
   testing::RunDelayedTasks(50);
   const auto& cursor =
@@ -208,7 +208,7 @@ TEST_F(LinkSelectionTest, HandCursorOverLinkAfterContextMenu) {
   // Hide context menu.
   frame->GetPage()->GetContextMenuController().ClearContextMenu();
 
-  frame->LocalFrameRoot()->GetEventHandler().ScheduleCursorUpdate();
+  frame->LocalFrameRoot().GetEventHandler().ScheduleCursorUpdate();
   testing::RunDelayedTasks(50);
   const auto& cursor =
       main_frame_->GetFrame()->GetChromeClient().LastSetCursorForTesting();