Remove attrs sky doesn't support.

sky/engine/core/page/Chrome.cpp

Index: sky/engine/core/page/Chrome.cpp
diff --git a/sky/engine/core/page/Chrome.cpp b/sky/engine/core/page/Chrome.cpp
index 53598806e8697a583580825a4245afb94b5acc1f..264050730fc858fe289035462ad1e39cca3d3934 100644
--- a/sky/engine/core/page/Chrome.cpp
+++ b/sky/engine/core/page/Chrome.cpp
@@ -106,16 +106,13 @@ void Chrome::mouseDidMoveOverElement(const HitTestResult& result, unsigned modif
     m_client->mouseDidMoveOverElement(result, modifierFlags);
 }
 
+// TODO(esprehn): Remove this in sky.
 void Chrome::setToolTip(const HitTestResult& result)
 {
     // First priority is a potential toolTip representing a spelling or grammar error
     TextDirection toolTipDirection;
     String toolTip = result.spellingToolTip(toolTipDirection);
 
-    // Next we'll consider a tooltip for element with "title" attribute
-    if (toolTip.isEmpty())
-        toolTip = result.title(toolTipDirection);
-
     m_client->setToolTip(toolTip, toolTipDirection);
 }