bad43fcae4
When using a Configuration object as a delta for use as an update to an existing Configuration object, the fontScale property is always defaulted to 1.0, which is not considered "undefined". That means that fontScale will always get overridden to 1.0. This changes the undefined value of fontScale to 0.0, which is set when the Configuration object is constructed. Thankfully, the documentation for Configuration states that until Configuration#setToDefaults() is called, the Configuration is in an invalid state. That means that apps can not rely on fontScale == 1.0 without calling setToDefaults(). Bug:29924927 Change-Id: I19342c55f7057423f1ca8c5d8dce1dff07617d90