Simplify media query handling for stylesheets.

sky/engine/core/frame/FrameView.cpp

Index: sky/engine/core/frame/FrameView.cpp
diff --git a/sky/engine/core/frame/FrameView.cpp b/sky/engine/core/frame/FrameView.cpp
index 888b0156d32ce3dfd4e02444245c79bb81c78064..3cd0717edd71d387f2f093465d7aff74bcbd05c4 100644
--- a/sky/engine/core/frame/FrameView.cpp
+++ b/sky/engine/core/frame/FrameView.cpp
@@ -222,15 +222,13 @@ void FrameView::performPreLayoutTasks()
     }
 
     Document* document = m_frame->document();
-    if (wasViewportResized())
+    if (wasViewportResized()) {
         document->notifyResizeForViewportUnits();
+        document->mediaQueryAffectingValueChanged();
 
-    // Viewport-dependent media queries may cause us to need completely different style information.
-    if (document->styleResolver().mediaQueryAffectedByViewportChange()) {
+        // TODO(esprehn): This is way too much work, it rebuilds the entire sheet list
+        // and does a full document recalc.
         document->styleResolverChanged();
-        document->mediaQueryAffectingValueChanged();
-    } else {
-        document->evaluateMediaQueryList();
     }
 
     document->updateRenderTreeIfNeeded();