CSSValue Immediates: Replace CSSPrimitiveValue usage with const references

Source/core/inspector/LayoutEditor.cpp

 // Copyright 2015 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #include "config.h"
 #include "core/inspector/LayoutEditor.h"
 
 #include "core/css/CSSComputedStyleDeclaration.h"
 #include "core/frame/FrameView.h"
 #include "core/inspector/InspectorCSSAgent.h"
@@ skipping 131 matching lines @@
     return cssValue;
 }
 
 PassRefPtr<JSONObject> LayoutEditor::createValueDescription(const String& propertyName) const
 {
     NullableCSSValue cssValue = getPropertyCSSValue(cssPropertyID(propertyName));
     if (!cssValue)
         return nullptr;
 
     RefPtr<JSONObject> object = JSONObject::create();
-    object->setNumber("value", toCSSPrimitiveValue(*cssValue).getFloatValue());
+    object->setNumber("value", toCSSPrimitiveValue(cssValue).getFloatValue());
     object->setString("unit", "px");
     return object.release();
 }
 
 void LayoutEditor::overlayStartedPropertyChange(const String& anchorName)
 {
     m_changingProperty = cssPropertyID(anchorName);
     if (!m_node || !m_changingProperty)
         return;
 
     NullableCSSValue cssValue = getPropertyCSSValue(m_changingProperty);
     if (!cssValue) {
         m_changingProperty = CSSPropertyInvalid;
         return;
     }
 
-    m_propertyInitialValue = toCSSPrimitiveValue(*cssValue).getFloatValue();
+    m_propertyInitialValue = toCSSPrimitiveValue(cssValue).getFloatValue();
 }
 
 void LayoutEditor::overlayPropertyChanged(float cssDelta)
 {
     if (m_changingProperty && m_node->isElementNode()) {
         String errorString;
         m_cssAgent->setCSSPropertyValue(&errorString, toElement(m_node.get()), m_changingProperty, String::number(cssDelta + m_propertyInitialValue) + "px");
     }
 }
 
 void LayoutEditor::overlayEndedPropertyChange()
 {
     m_changingProperty = CSSPropertyInvalid;
     m_propertyInitialValue = 0;
 }
 
 } // namespace blink