Add ExternalPrerenderRequestHandler and related API

chrome/android/javatests/src/org/chromium/chrome/browser/prerender/ExternalPrerenderRequestTest.java

Index: chrome/android/javatests/src/org/chromium/chrome/browser/prerender/ExternalPrerenderRequestTest.java
diff --git a/chrome/android/javatests/src/org/chromium/chrome/browser/prerender/ExternalPrerenderRequestTest.java b/chrome/android/javatests/src/org/chromium/chrome/browser/prerender/ExternalPrerenderRequestTest.java
new file mode 100644
index 0000000000000000000000000000000000000000..c25adb1454345da0c6f714af8b806e6597d03130
--- /dev/null
+++ b/chrome/android/javatests/src/org/chromium/chrome/browser/prerender/ExternalPrerenderRequestTest.java
@@ -0,0 +1,41 @@
+// Copyright 2013 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.prerender;
+
+import android.test.suitebuilder.annotation.SmallTest;
+
+import org.chromium.base.test.util.Feature;
+import org.chromium.chrome.browser.profiles.Profile;
+import org.chromium.chrome.test.util.TestHttpServerClient;
+import org.chromium.chrome.testshell.ChromiumTestShellTestBase;
+
+/**
+ * Tests for adding and removing prerenders using the {@link ExternalPrerenderHandler}
+ */
+public class ExternalPrerenderRequestTest extends ChromiumTestShellTestBase {
+    private static final String GOOGLE_URL =
+            TestHttpServerClient.getUrl("clank/test/data/android/prerender/google.html");
+    private ExternalPrerenderHandler mHandler;
+    @Override
+    public void setUp() throws Exception {
+        super.setUp();
+        clearAppData();
+        launchChromiumTestShellWithBlankPage();
+        assertTrue(waitForActiveShellToBeDoneLoading());
+        mHandler = new ExternalPrerenderHandler();
+    }
+
+    @SmallTest
+    @Feature({"Prerender"})
+    public void testAddPrerender() {
+        Profile profile = Profile.getLastUsedProfile();
+        int webContentsPtr = mHandler.addPrerender(profile, GOOGLE_URL, "", 0, 0);
+        assertTrue(ExternalPrerenderHandler.hasPrerenderedUrl(
+                profile, GOOGLE_URL, webContentsPtr));
+        mHandler.cancelCurrentPrerender();
+        assertFalse(ExternalPrerenderHandler.hasPrerenderedUrl(
+                profile, GOOGLE_URL, webContentsPtr));
+    }
+}