Merge 149838 "Reland "Clear highlight when the highlighted node ..."

Source/WebKit/chromium/src/LinkHighlight.cpp

Index: Source/WebKit/chromium/src/LinkHighlight.cpp
===================================================================
--- Source/WebKit/chromium/src/LinkHighlight.cpp	(revision 151510)
+++ Source/WebKit/chromium/src/LinkHighlight.cpp	(working copy)
@@ -335,6 +335,9 @@
 
         if (m_currentGraphicsLayer)
             m_currentGraphicsLayer->addRepaintRect(FloatRect(layer()->position().x, layer()->position().y, layer()->bounds().width, layer()->bounds().height));
+    } else {
+        clearGraphicsLayerLinkHighlightPointer();
+        releaseResources();
     }
 }