Text control elements should contain all (shadow DOM) children.

third_party/WebKit/LayoutTests/fast/forms/resources/common-spinbutton-change-and-input-events.js

Index: third_party/WebKit/LayoutTests/fast/forms/resources/common-spinbutton-change-and-input-events.js
diff --git a/third_party/WebKit/LayoutTests/fast/forms/resources/common-spinbutton-change-and-input-events.js b/third_party/WebKit/LayoutTests/fast/forms/resources/common-spinbutton-change-and-input-events.js
index ad704dab940268a440a13c26d4351ba34257fe45..404031a613dace92d8dee0181973f394fb91897d 100644
--- a/third_party/WebKit/LayoutTests/fast/forms/resources/common-spinbutton-change-and-input-events.js
+++ b/third_party/WebKit/LayoutTests/fast/forms/resources/common-spinbutton-change-and-input-events.js
@@ -32,7 +32,8 @@ function testSpinButtonChangeAndInputEvents(inputType, initialValue, expectedVal
     debug('Click the upper button');
     // Move the cursor on the upper button.
     var spinButton = getElementByPseudoId(internals.oldestShadowRoot(testInput), "-webkit-inner-spin-button");
-    eventSender.mouseMoveTo(testInput.offsetLeft + spinButton.offsetLeft, testInput.offsetTop + testInput.offsetHeight / 4);
+    var rect = spinButton.getBoundingClientRect();
+    eventSender.mouseMoveTo(rect.left, rect.top + rect.height / 4);
     eventSender.mouseDown();
     debug('Triggers only input event on mouseDown');
     shouldBeEqualToString('testInput.value', expectedValue);