Upstream Account chooser fragment of First Run.

chrome/android/java/src/org/chromium/chrome/browser/firstrun/FirstRunPage.java

Index: chrome/android/java/src/org/chromium/chrome/browser/firstrun/FirstRunPage.java
diff --git a/chrome/android/java/src/org/chromium/chrome/browser/firstrun/FirstRunPage.java b/chrome/android/java/src/org/chromium/chrome/browser/firstrun/FirstRunPage.java
new file mode 100644
index 0000000000000000000000000000000000000000..5e81ff3522c25da9aae861d3e8b894a641be0a6e
--- /dev/null
+++ b/chrome/android/java/src/org/chromium/chrome/browser/firstrun/FirstRunPage.java
@@ -0,0 +1,96 @@
+// 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.
+
+package org.chromium.chrome.browser.firstrun;
+
+import android.app.Fragment;
+import android.content.Context;
+import android.os.Bundle;
+
+/**
+ * A first run page shown in the First Run ViewPager.
+ */
+public class FirstRunPage extends Fragment {
+    private Bundle mProperties = new Bundle();
+
+    // FRE properties:
+    private static final String LAST_PAGE_NUMBER = "LastPageNumber";
+
+    // Per-page properties:
+    private static final String THIS_PAGE_NUMBER = "ThisPageNumber";
+
+    /**
+     * Appends page-specific properties to the page instance bundle.
+     * @param props Instance properties.
+     * @param pageNumber This page number in the First Run sequence.
+     * @param lastPageNumber Last page number in the First Run sequence.
+     * @return Instance properties with the page-specific properties added.
+     */
+    public static Bundle addProperties(Bundle props, int pageNumber, int lastPageNumber) {
+        props.putInt(THIS_PAGE_NUMBER, pageNumber);
+        return props;
+    }
+
+    /**
+     * @return Whether this page should be skipped on the FRE resume.
+     * @param appContext An application context.
+     */
+    public boolean shouldSkipPageOnResume(Context appContext) {
+        return false;
+    }
+
+    // Fragment:
+    @Override
+    public void onCreate(Bundle savedInstanceState) {
+        super.onCreate(savedInstanceState);
+        if (savedInstanceState != null) {
+            mProperties = savedInstanceState;
+        } else if (getArguments() != null) {
+            mProperties = getArguments();
+        } else {
+            mProperties = new Bundle();
+        }
+    }
+
+    @Override
+    public void onSaveInstanceState(Bundle outState) {
+        super.onSaveInstanceState(outState);
+        outState.putAll(mProperties);
+    }
+
+    /**
+     * @return Whether the back button press was handled by this page.
+     */
+    public boolean interceptBackPressed() {
+        return false;
+    }
+
+    /**
+     * @return Passed arguments if any, or saved instance state if any, or an empty bundle.
+     */
+    protected Bundle getProperties() {
+        return mProperties;
+    }
+
+    /**
+     * @return The interface to the host.
+     */
+    protected FirstRunPageDelegate getPageDelegate() {
+        return (FirstRunPageDelegate) getActivity();
+    }
+
+    /**
+     * @return Whether this page is the last page of the FRE.
+     */
+    protected boolean isLastPage() {
+        return getProperties().getInt(THIS_PAGE_NUMBER) == getProperties().getInt(LAST_PAGE_NUMBER);
+    }
+
+    /**
+     * Advances to the next FRE page.
+     */
+    protected void advanceToNextPage() {
+        getPageDelegate().advanceToNextPage();
+    }
+}