Fix black text on black background in <select> dialog.

Fix black text on black background in <select> dialog.

This happened when a <select> HTML element was used in WebView, and the
activity containing the WebView had a pre-Holo theme (e.g.
android:Theme.Black).

BUG=596626
Review URL: https://codereview.chromium.org/1826573002

Cr-Commit-Position: refs/heads/master@{#382711}
(cherry picked from commit 58873c3c518c096f1717ed5683963ae989e83ef8)

Committed: https://chromium.googlesource.com/chromium/src/+/91765a3bc8ea02e419ea44897ceae4cc942d1875

[newt (away), 2016-03-22 23:53:03]

Description was changed from

==========
Fix black text on black background in <select> dialog.

This happened when a <select> HTML element was used in WebView, and the
activity containing the WebView had a pre-Holo theme (e.g.
android:Theme.Black).

BUG=596626

Review URL: https://codereview.chromium.org/1826573002

Cr-Commit-Position: refs/heads/master@{#382711}
(cherry picked from commit 58873c3c518c096f1717ed5683963ae989e83ef8)
==========

to

==========
Fix black text on black background in <select> dialog.

This happened when a <select> HTML element was used in WebView, and the
activity containing the WebView had a pre-Holo theme (e.g.
android:Theme.Black).

BUG=596626

Review URL: https://codereview.chromium.org/1826573002

Cr-Commit-Position: refs/heads/master@{#382711}
(cherry picked from commit 58873c3c518c096f1717ed5683963ae989e83ef8)

Committed:
https://chromium.googlesource.com/chromium/src/+/91765a3bc8ea02e419ea44897cea...
==========

[newt (away), 2016-03-22 23:53:04]

Committed patchset #1 (id:1) manually as
91765a3bc8ea02e419ea44897ceae4cc942d1875.