[Android] Upstream BrowserVersion.java and related native code.

chrome/android/java/src/org/chromium/chrome/browser/BrowserVersion.java

+// Copyright 2011 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;
+
+/**
+ * TODO(nileshagrawal): Rename this class to something more appropriate.
+ * Provides a way for java code to determine whether Chrome was built as an official build.
+ */
+public class BrowserVersion {
+    /**
+     * Check if the browser was built as an "official" build.
+     */
+    public static boolean isOfficialBuild() {
+        return nativeIsOfficialBuild();
+    }
+
+    /**
+     * Only native code can see the OFFICIAL_BUILD flag; check it from there.  This function is
+     * not handled by initialize() and is not available early in startup (before the native
+     * library has loaded).  Calling it before that point will result in an exception.
+     */
+    private static native boolean nativeIsOfficialBuild();
+
+    /**
+     * Get the HTML for the terms of service to be displayed at first run.
+     */
+    public static String getTermsOfServiceHtml() {
+        return nativeGetTermsOfServiceHtml();
+    }
+
+    /**
+     * The terms of service are a native resource.
+     */
+    private static native String nativeGetTermsOfServiceHtml();
+}