Attach the stop button to the textbox in the title bar.

This also required using different assets for the title bar background.

Fix for http://b/issue?id=2485473
diff --git a/res/drawable/title_loading.xml b/res/drawable/title_loading.xml
new file mode 100644
index 0000000..7f145d3
--- /dev/null
+++ b/res/drawable/title_loading.xml
@@ -0,0 +1,30 @@
+<?xml version="1.0" encoding="utf-8"?>
+<!-- Copyright (C) 2010 The Android Open Source Project
+
+     Licensed under the Apache License, Version 2.0 (the "License");
+     you may not use this file except in compliance with the License.
+     You may obtain a copy of the License at
+
+          http://www.apache.org/licenses/LICENSE-2.0
+
+     Unless required by applicable law or agreed to in writing, software
+     distributed under the License is distributed on an "AS IS" BASIS,
+     WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+     See the License for the specific language governing permissions and
+     limitations under the License.
+-->
+
+<!-- Custom layout file which mimics the textfield_search look, but draws the
+        pressed state even without window focus -->
+<selector xmlns:android="http://schemas.android.com/apk/res/android">
+
+    <item android:state_pressed="true"
+        android:drawable="@*android:drawable/textfield_search_pressed" />
+
+    <item android:state_enabled="true" android:state_focused="true"
+        android:drawable="@*android:drawable/textfield_search_selected" />
+
+    <item android:drawable="@*android:drawable/textfield_search_default" />
+
+</selector>
+