Replace default page scale limits in PageScaleConstraintsSet.

Source/web/PageScaleConstraintsSet.cpp

 /*
  * Copyright (C) 2013 Google Inc. All rights reserved.
  *
  * Redistribution and use in source and binary forms, with or without
  * modification, are permitted provided that the following conditions are
  * met:
  *
  *     * Redistributions of source code must retain the above copyright
  * notice, this list of conditions and the following disclaimer.
  *     * Redistributions in binary form must reproduce the above
@@ skipping 22 matching lines @@
 
 #include "platform/Length.h"
 #include "wtf/Assertions.h"
 
 namespace blink {
 
 static const float defaultMinimumScale = 0.25f;
 static const float defaultMaximumScale = 5.0f;
 
 PageScaleConstraintsSet::PageScaleConstraintsSet()
-    : m_lastContentsWidth(0)
+    : m_finalConstraints(1, 1, 1)
+    , m_lastContentsWidth(0)
     , m_needsReset(false)
     , m_constraintsDirty(false)
 {
-    m_finalConstraints = defaultConstraints();
 }
 
 PageScaleConstraints PageScaleConstraintsSet::defaultConstraints() const
 {
     return PageScaleConstraints(-1, defaultMinimumScale, defaultMaximumScale);
 }
 
 void PageScaleConstraintsSet::updatePageDefinedConstraints(const ViewportDescription& description, Length legacyFallbackWidth)
 {
     m_pageDefinedConstraints = description.resolve(m_viewSize, legacyFallbackWidth);
@@ skipping 168 matching lines @@
             adjustedLayoutSizeWidth = m_viewSize.width() / targetDensityDPIFactor;
             adjustedLayoutSizeHeight = computeHeightByAspectRatio(adjustedLayoutSizeWidth, m_viewSize);
         }
     }
 
     m_pageDefinedConstraints.layoutSize.setWidth(adjustedLayoutSizeWidth);
     m_pageDefinedConstraints.layoutSize.setHeight(adjustedLayoutSizeHeight);
 }
 
 } // namespace blink