Remove single client special cases for StyleSheetContents.

sky/engine/core/frame/UseCounter.cpp

Index: sky/engine/core/frame/UseCounter.cpp
diff --git a/sky/engine/core/frame/UseCounter.cpp b/sky/engine/core/frame/UseCounter.cpp
index a934e0389507de9a90c67fa31efb3e53b1e5972f..1c5d24d3f529c234275b20de824ed75e23b0aa74 100644
--- a/sky/engine/core/frame/UseCounter.cpp
+++ b/sky/engine/core/frame/UseCounter.cpp
@@ -254,10 +254,7 @@ UseCounter* UseCounter::getFrom(const CSSStyleSheet* sheet)
 
 UseCounter* UseCounter::getFrom(const StyleSheetContents* sheetContents)
 {
-    // FIXME: We may want to handle stylesheets that have multiple owners
-    //        http://crbug.com/242125
-    if (sheetContents && sheetContents->hasSingleOwnerNode())
-        return getFrom(sheetContents->singleOwnerDocument());
+    // TODO(esprehn): Support this in Sky.

[ojan, 2014/12/13 00:55:38]

Is this just:
if (sheetContents)
  return getFrom(sheetContents->ownerDocument());

     return 0;
 }