Implement a sketch of the new MD Incognito NTP on Android

chrome/android/java/src/org/chromium/chrome/browser/ntp/IncognitoNewTabPageViewMD.java

Index: chrome/android/java/src/org/chromium/chrome/browser/ntp/IncognitoNewTabPageViewMD.java
diff --git a/chrome/android/java/src/org/chromium/chrome/browser/ntp/IncognitoNewTabPageViewMD.java b/chrome/android/java/src/org/chromium/chrome/browser/ntp/IncognitoNewTabPageViewMD.java
new file mode 100644
index 0000000000000000000000000000000000000000..604a33f3a7bb79357149b136c263e351616d31af
--- /dev/null
+++ b/chrome/android/java/src/org/chromium/chrome/browser/ntp/IncognitoNewTabPageViewMD.java
@@ -0,0 +1,74 @@
+// 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.
+
+package org.chromium.chrome.browser.ntp;
+
+import android.content.Context;
+import android.support.annotation.IdRes;
+import android.support.annotation.StringRes;
+import android.text.style.BulletSpan;
+import android.text.style.ForegroundColorSpan;
+import android.util.AttributeSet;
+import android.widget.TextView;
+
+import org.chromium.base.ApiCompatibilityUtils;
+import org.chromium.chrome.R;
+import org.chromium.ui.text.SpanApplier;
+
+/**
+ * The Material Design New Tab Page for use in the Incognito profile. This is an extension
+ * of the IncognitoNewTabPageView class with improved text content and a more responsive design.
+ */
+public class IncognitoNewTabPageViewMD extends IncognitoNewTabPageView {
+    private Context mContext;
+
+    /** Default constructor needed to inflate via XML. */
+    public IncognitoNewTabPageViewMD(Context context, AttributeSet attrs) {
+        super(context, attrs);
+        mContext = context;
+    }
+
+    @Override
+    protected void onFinishInflate() {
+        populateBulletpoints(R.id.new_tab_incognito_features, R.string.new_tab_otr_not_saved);
+        populateBulletpoints(R.id.new_tab_incognito_warning, R.string.new_tab_otr_visible);
+
+        super.onFinishInflate();
+    }
+
+    /**
+     * @param element Resource ID of the element to be populated with the bulletpoints.
+     * @param content String ID to serve as the text of |element|. Must contain an <em></em> span,
+     *         which will be emphasized, and three <li> items, which will be converted to
+     *         bulletpoints.
+     * Populates |element| with |content|.
+     */
+    private void populateBulletpoints(@IdRes int element, @StringRes int content) {
+        TextView view = (TextView) findViewById(element);
+        String text = mContext.getResources().getString(content);
+
+        // TODO(msramek): Unfortunately, our strings are missing the closing "</li>" tag, which
+        // is not a problem when they're used in the Desktop WebUI (omitting the tag is valid in
+        // HTML5), but it is a problem for SpanApplier. Update the strings and remove this regex.
+        // Note that modifying the strings is a non-trivial operation as they went through a special
+        // translation process.
+        text = text.replaceAll("<li>([^<]+)\n", "<li>$1</li>\n");
+
+        // Disambiguate the <li><li> spans for SpanApplier.
+        text = text.replaceFirst("<li>(.*)</li>", "<li1>$1</li1>");
+        text = text.replaceFirst("<li>(.*)</li>", "<li2>$1</li2>");
+        text = text.replaceFirst("<li>(.*)</li>", "<li3>$1</li3>");
+
+        // Remove the <ul></ul> tags which serve no purpose here.
+        text = text.replaceAll("</?ul>", "");
+
+        view.setText(SpanApplier.applySpans(text,
+                new SpanApplier.SpanInfo("<em>", "</em>",
+                        new ForegroundColorSpan(ApiCompatibilityUtils.getColor(
+                                mContext.getResources(), R.color.incognito_emphasis))),
+                new SpanApplier.SpanInfo("<li1>", "</li1>", new BulletSpan()),
+                new SpanApplier.SpanInfo("<li2>", "</li2>", new BulletSpan()),
+                new SpanApplier.SpanInfo("<li3>", "</li3>", new BulletSpan())));
+    }
+}