Delete document marker related invalidation code.

sky/engine/web/ChromeClientImpl.cpp

Index: sky/engine/web/ChromeClientImpl.cpp
diff --git a/sky/engine/web/ChromeClientImpl.cpp b/sky/engine/web/ChromeClientImpl.cpp
index 91884a7017462121b1e758e43d04e0ef2e65d446..dca9c7d4933831fdc237f888384fedea52bb40bb 100644
--- a/sky/engine/web/ChromeClientImpl.cpp
+++ b/sky/engine/web/ChromeClientImpl.cpp
@@ -306,12 +306,6 @@ void ChromeClientImpl::mouseDidMoveOverElement(
     m_webView->client()->setMouseOverURL(url);
 }
 
-void ChromeClientImpl::setToolTip(const String& tooltipText, TextDirection dir)
-{
-    if (m_webView->client())
-        m_webView->client()->setToolTipText(tooltipText, toWebTextDirection(dir));
-}
-
 void ChromeClientImpl::setCursor(const Cursor& cursor)
 {
     setCursor(WebCursorInfo(cursor));