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chromium/content/test/data/accessibility/css/background-color-transparent-expected-android.txt 

android.webkit.WebView focusable focused
++android.widget.TextView name='Document base color.'
++android.widget.TextView name='Transparent color.'
++android.widget.TextView name='Obscuring background.'
++android.widget.TextView name='Blended with document base color.'
++android.widget.TextView name='Blended with background color.'