Redo Autofill wallet preferences on Android.

chrome/android/java/res/layout/autofill_server_card_clear_copy_button.xml

Index: chrome/android/java/res/layout/autofill_server_card_clear_copy_button.xml
diff --git a/chrome/android/java/res/layout/autofill_server_card_clear_copy_button.xml b/chrome/android/java/res/layout/autofill_server_card_clear_copy_button.xml
new file mode 100644
index 0000000000000000000000000000000000000000..260cbc0ac27df479a24ec59b090d3ed0b730dbd6
--- /dev/null
+++ b/chrome/android/java/res/layout/autofill_server_card_clear_copy_button.xml
@@ -0,0 +1,16 @@
+<?xml version="1.0" encoding="utf-8"?>
+<!-- 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. -->
+
+<!-- Layout for button that permits user to clear the local copy of a card. -->
+<org.chromium.chrome.browser.widget.ButtonCompat
+    xmlns:android="http://schemas.android.com/apk/res/android"
+    xmlns:chrome="http://schemas.android.com/apk/res-auto"
+    android:id="@+id/button_preference"
+    android:layout_height="wrap_content"
+    android:layout_width="wrap_content"
+    android:minHeight="40dp"

[newt (away), 2015/03/18 04:31:44]

By default, buttons have a minHeight of 36dp. We use this in other parts of
settings, so it'd be nice not to deviate here.

[Evan Stade, 2015/03/19 00:24:22]

This is actually copied from preference_button.xml. As you can see, I forgot to
delete android:id="@+id/button_preference" (or I might should leave it to use it
in findViewById as you suggetsed).

The reason I didn't just reuse preference_button.xml is because I couldn't
figure out how to set the text in an elegant way (also the extra LinearLayout
wrapper was not needed).

[newt (away), 2015/03/19 01:41:42]

Ah, my bad. Didn't realize we override the height in preference_button.xml too

+    android:textColor="#fff"
+    android:text="@string/autofill_clear_local_copy_button"
+    chrome:buttonColor="@color/pref_accent_color" />