Add support for webapk without runtimeHost

chrome/android/webapk/shell_apk/res/layout/choose_host_browser_dialog_list.xml

Index: chrome/android/webapk/shell_apk/res/layout/choose_host_browser_dialog_list.xml
diff --git a/chrome/android/webapk/shell_apk/res/layout/choose_host_browser_dialog_list.xml b/chrome/android/webapk/shell_apk/res/layout/choose_host_browser_dialog_list.xml
new file mode 100644
index 0000000000000000000000000000000000000000..113a7f34d89db70913ea8142b9151cde8676a5b1
--- /dev/null
+++ b/chrome/android/webapk/shell_apk/res/layout/choose_host_browser_dialog_list.xml
@@ -0,0 +1,27 @@
+<?xml version="1.0" encoding="utf-8"?>
+<!-- Copyright 2017 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. -->
+
+<LinearLayout

[Ted C, 2017/06/05 18:24:48]

FYI, you could likely use a framelayout here if you wanted to be a tiny bit more
performant, but it probably makes this slightly harder to read so not super
important

(for horizontal layouts where you know the exact width of the view, you could do
layout_marginStart="68dp" on the browser_name field because you know exactly how
the image is...not needed here again, just fyi).

[Xi Han, 2017/06/05 20:30:02]

Agree, I feel having two views is more easy to read and change. Thanks for the
details anyway.

+    xmlns:android="http://schemas.android.com/apk/res/android"
+    android:orientation="horizontal"
+    android:layout_width="match_parent"
+    android:layout_height="wrap_content">
+
+    <ImageView
+        android:id="@+id/browser_icon"
+        android:contentDescription="@null"
+        android:layout_width="48dp"
+        android:layout_height="48dp"
+        android:paddingStart="20dip"
+        android:layout_gravity="start" />
+
+    <TextView
+        android:id="@+id/browser_name"
+        android:paddingStart="20dip"

[Ted C, 2017/06/05 18:24:48]

s/dip/dp

[Xi Han, 2017/06/05 20:30:02]

Done.

+        android:textColor="@color/item_selection_text_color"
+        android:layout_gravity="center"
+        android:layout_width="fill_parent"
+        android:layout_height="wrap_content" />
+</LinearLayout>