Fix a zooming bug with EM MQs

Source/core/css/MediaQueryEvaluator.cpp

 /*
  * CSS Media Query Evaluator
  *
  * Copyright (C) 2006 Kimmo Kinnunen <kimmo.t.kinnunen@nokia.com>.
  * Copyright (C) 2013 Apple Inc. All rights reserved.
  * Copyright (C) 2013 Intel Corporation. All rights reserved.
  *
  * Redistribution and use in source and binary forms, with or without
  * modification, are permitted provided that the following conditions
  * are met:
@@ skipping 332 matching lines @@
         return false;
 
     CSSPrimitiveValue* primitiveValue = toCSSPrimitiveValue(value);
 
     if (primitiveValue->isNumber()) {
         result = primitiveValue->getIntValue();
         return !strict || !result;
     }
 
     if (primitiveValue->isLength()) {
-        result = primitiveValue->computeLength<int>(style, rootStyle);
+        result = primitiveValue->computeLength<int>(style, rootStyle, 1.0, true);

[kenneth.r.christiansen, 2013/05/31 08:21:21]

Could you add some comments like /* zoom level */ 1.0, /* ... */ true, so that
people don't have to look up the method description 

         return true;
     }
 
     return false;
 }
 
 static bool deviceHeightMediaFeatureEval(CSSValue* value, RenderStyle* style, Frame* frame, MediaFeaturePrefix op)
 {
     if (value) {
         FloatRect sg = screenRect(frame->page()->mainFrame()->view());
@@ skipping 328 matching lines @@
     // and let trampoline functions override the prefix if prefix is
     // used
     EvalFunc func = gFunctionMap->get(expr->mediaFeature().impl());
     if (func)
         return func(expr->value(), m_style.get(), m_frame, NoPrefix);
 
     return false;
 }
 
 } // namespace