Add the UI for the Interests Prototype.

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

Index: chrome/android/java/res/layout/interests_page.xml
diff --git a/chrome/android/java/res/layout/interests_page.xml b/chrome/android/java/res/layout/interests_page.xml
new file mode 100644
index 0000000000000000000000000000000000000000..096c9869507922fedc88fcf135c488d6c592dd82
--- /dev/null
+++ b/chrome/android/java/res/layout/interests_page.xml
@@ -0,0 +1,27 @@
+<?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. -->
+
+<org.chromium.chrome.browser.ntp.InterestsPageView

[newt (away), 2015/09/29 17:33:21]

InterestsPageView should be a FrameLayout (which is simpler) since it only has a
single child. (and remove android:orientation too, sine that doesn't apply to
FrameLayouts)

[PEConn, 2015/11/18 15:26:56]

Done.

+    xmlns:android="http://schemas.android.com/apk/res/android"
+    android:id="@+id/interests_content"

[newt (away), 2015/09/29 17:33:21]

nit: don't add an ID unless you're going to use it. Leaving out the ID makes it
clear that the view isn't manipulated programmatically, which is helpful to
know.

[PEConn, 2015/11/18 15:26:56]

Done.

+    android:layout_width="match_parent"
+    android:layout_height="match_parent"
+    android:paddingTop="@dimen/tab_strip_height"
+    android:orientation="vertical"
+    android:focusable="true"
+    android:focusableInTouchMode="true" >
+
+   <GridView xmlns:android="http://schemas.android.com/apk/res/android"

[newt (away), 2015/09/29 17:33:21]

remove redundant xmlns attribute (it's only needed on the root element in the
file)

[PEConn, 2015/11/18 15:26:56]

Done.

+    android:id="@+id/interests_list_view"

[newt (away), 2015/09/29 17:33:21]

indentation should look like this:

<org.chromium.chrome.browser.ntp.InterestsPageView
    xmlns:android="http://schemas.android.com/apk/res/android"
    ... />

    <GridView
        android:id="@+id/interests_list_view"
        ... />

</org.chromium.chrome.browser.ntp.InterestsPageView>

[PEConn, 2015/11/18 15:26:56]

Done.

+    android:layout_width="match_parent"
+    android:layout_height="match_parent"
+    android:paddingTop="@dimen/toolbar_height_no_shadow"
+    android:numColumns="2"
+    android:verticalSpacing="10dp"
+    android:horizontalSpacing="10dp"
+    android:stretchMode="columnWidth"
+    android:gravity="center" /> 
+    
+</org.chromium.chrome.browser.ntp.InterestsPageView>