Add observer interface to PrerenderContents.

chrome/browser/prerender/prerender_tracker_unittest.cc

 // Copyright (c) 2012 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.
 
 #include <set>
+#include <utility>
 
 #include "base/logging.h"
 #include "base/message_loop.h"
+#include "chrome/browser/prerender/prerender_contents.h"
 #include "chrome/browser/prerender/prerender_manager.h"
 #include "chrome/browser/prerender/prerender_tracker.h"
 #include "chrome/test/base/testing_browser_process.h"
 #include "content/public/test/test_browser_thread.h"
 #include "testing/gtest/include/gtest/gtest.h"
 
 using content::BrowserThread;
 
 namespace prerender {
 
 namespace {
 
+class TestPrerenderContents : public PrerenderContents {
+ public:
+  TestPrerenderContents(PrerenderManager* prerender_manager,
+                        int child_id, int route_id)
+      : PrerenderContents(prerender_manager, static_cast<Profile*>(NULL),
+                          GURL(), content::Referrer(), ORIGIN_NONE,
+                          PrerenderManager::kNoExperiment),
+        child_id_(child_id),
+        route_id_(route_id) {
+  }
+
+  ~TestPrerenderContents() {

[mmenke, 2012/12/06 19:54:22]

nit:  virtual

[gavinp, 2012/12/07 17:37:04]

Done.

+    if (final_status() == FINAL_STATUS_MAX)
+      SetFinalStatus(FINAL_STATUS_USED);
+  }
+
+  virtual bool GetChildId(int* child_id) const OVERRIDE {
+    *child_id = child_id_;
+    return true;
+  }
+
+  virtual bool GetRouteId(int* route_id) const OVERRIDE {
+    *route_id = route_id_;
+    return true;
+  }
+
+  void Start() {
+    AddObserver(prerender_manager()->prerender_tracker());
+    prerendering_has_started_ = true;
+    NotifyPrerenderStart();
+  }
+
+  void Cancel() {
+    Destroy(FINAL_STATUS_CANCELLED);
+  }
+
+  void Use() {
+    SetFinalStatus(FINAL_STATUS_USED);
+  }
+
+ private:
+  int child_id_;
+  int route_id_;
+};
+
 class TestPrerenderManager : public PrerenderManager {
  public:
   explicit TestPrerenderManager(PrerenderTracker* prerender_tracker) :
       PrerenderManager(NULL, prerender_tracker) {
     mutable_config().rate_limit_enabled = false;
   }
 
   virtual void DestroyPrerenderForRenderView(
       int process_id, int view_id, FinalStatus final_status) OVERRIDE {
     cancelled_id_pairs_.insert(std::make_pair(process_id, view_id));
   }
 
+  // We never allocate our PrerenderContents in PrerenderManager, so we don't
+  // ever want the default pending delete behaviour.
+  virtual void MoveEntryToPendingDelete(PrerenderContents* entry,
+                                        FinalStatus final_status) OVERRIDE {
+  }
+
   bool WasPrerenderCancelled(int child_id, int route_id) {
     std::pair<int, int> child_route_id_pair(child_id, route_id);
     return cancelled_id_pairs_.count(child_route_id_pair) != 0;
   }
 
+

[mmenke, 2012/12/06 19:54:22]

nit: Remove blank line.

[gavinp, 2012/12/07 17:37:04]

Done.

   // Set of all the RenderViews that have been cancelled.
   std::set<std::pair<int, int> > cancelled_id_pairs_;
 };
 
 }  // namespace
 
 class PrerenderTrackerTest : public testing::Test {
  public:
+  static const int kDefaultChildId = 0;
+  static const int kDefaultRouteId = 100;
+
   PrerenderTrackerTest() :
       ui_thread_(BrowserThread::UI, &message_loop_),
       io_thread_(BrowserThread::IO, &message_loop_),
-      prerender_manager_(new TestPrerenderManager(prerender_tracker())) {
-  }
-
-  TestPrerenderManager* prerender_manager() {
-    return prerender_manager_.get();
+      prerender_manager_(prerender_tracker()),
+      test_contents_(&prerender_manager_, kDefaultChildId, kDefaultRouteId) {
   }
 
   PrerenderTracker* prerender_tracker() {
     return g_browser_process->prerender_tracker();
   }
 
+  TestPrerenderManager* prerender_manager() {
+    return &prerender_manager_;
+  }
+
+  TestPrerenderContents* test_contents() {
+    return &test_contents_;
+  }
+
   int GetCurrentStatus(int child_id, int route_id) {
     FinalStatus final_status;
     if (!prerender_tracker()->GetFinalStatus(child_id, route_id,
                                              &final_status)) {
       return -1;
     }
     return final_status;
   }
 
   // Runs any tasks queued on either thread.
   void RunEvents() {
     message_loop_.RunUntilIdle();
   }
 
  private:
   MessageLoop message_loop_;
   content::TestBrowserThread ui_thread_;
   content::TestBrowserThread io_thread_;
 
-  scoped_ptr<TestPrerenderManager> prerender_manager_;
+  TestPrerenderManager prerender_manager_;
+  TestPrerenderContents test_contents_;
 };
 
 // Check that a non-existant RenderView is handled correctly.
 TEST_F(PrerenderTrackerTest, PrerenderTrackerNull) {
-  FinalStatus final_status;
-  EXPECT_FALSE(prerender_tracker()->TryUse(0, 0));
-  EXPECT_FALSE(prerender_tracker()->TryCancel(0, 0, FINAL_STATUS_HTTPS));
+  EXPECT_FALSE(prerender_tracker()->TryUse(kDefaultChildId, kDefaultRouteId));
+  EXPECT_FALSE(prerender_tracker()->TryCancel(
+      kDefaultChildId, kDefaultRouteId, FINAL_STATUS_CANCELLED));
   EXPECT_FALSE(prerender_tracker()->TryCancelOnIOThread(
-      0, 0, FINAL_STATUS_HTTPS));
-  EXPECT_FALSE(prerender_tracker()->IsPrerenderingOnIOThread(0, 0));
-  EXPECT_FALSE(prerender_tracker()->GetFinalStatus(0, 0, &final_status));
-  EXPECT_FALSE(prerender_manager()->WasPrerenderCancelled(0, 0));
+      kDefaultChildId, kDefaultRouteId, FINAL_STATUS_CANCELLED));
+  EXPECT_FALSE(prerender_tracker()->IsPrerenderingOnIOThread(
+      kDefaultChildId, kDefaultRouteId));
+  FinalStatus final_status;
+  EXPECT_FALSE(prerender_tracker()->GetFinalStatus(
+      kDefaultChildId, kDefaultRouteId, &final_status));
+  EXPECT_FALSE(prerender_manager()->WasPrerenderCancelled(
+      kDefaultChildId, kDefaultRouteId));
 }
 
 // Check that a page that is used is handled correctly.
 TEST_F(PrerenderTrackerTest, PrerenderTrackerUsed) {
-  prerender_tracker()->OnPrerenderingStarted(0, 0, prerender_manager());
-  EXPECT_EQ(FINAL_STATUS_MAX, GetCurrentStatus(0, 0));
-
-  // This calls AddPrerenderOnIOThreadTask().
-  RunEvents();
-
-  EXPECT_TRUE(prerender_tracker()->IsPrerenderingOnIOThread(0, 0));
-  EXPECT_EQ(FINAL_STATUS_MAX, GetCurrentStatus(0, 0));
+  test_contents()->Start();
+
+  EXPECT_EQ(FINAL_STATUS_MAX,
+            GetCurrentStatus(kDefaultChildId, kDefaultRouteId));
+
+  // This calls AddPrerenderOnIOThreadTask().
+  RunEvents();
+
+  EXPECT_TRUE(prerender_tracker()->IsPrerenderingOnIOThread(
+      kDefaultChildId, kDefaultRouteId));
+  EXPECT_EQ(FINAL_STATUS_MAX,
+            GetCurrentStatus(kDefaultChildId, kDefaultRouteId));
 
   // Display the prerendered RenderView.
-  EXPECT_TRUE(prerender_tracker()->TryUse(0, 0));
+  EXPECT_TRUE(prerender_tracker()->TryUse(kDefaultChildId, kDefaultRouteId));
 
   // Make sure the page can't be destroyed or claim it was destroyed after
   // it's been used.
-  EXPECT_FALSE(prerender_tracker()->TryCancel(0, 0, FINAL_STATUS_HTTPS));
+  EXPECT_FALSE(prerender_tracker()->TryCancel(
+      kDefaultChildId, kDefaultRouteId, FINAL_STATUS_CANCELLED));
   EXPECT_FALSE(prerender_tracker()->TryCancelOnIOThread(
-      0, 0, FINAL_STATUS_TIMED_OUT));
-  EXPECT_EQ(FINAL_STATUS_USED, GetCurrentStatus(0, 0));
+      kDefaultChildId, kDefaultRouteId, FINAL_STATUS_TIMED_OUT));
+  EXPECT_EQ(FINAL_STATUS_USED,
+            GetCurrentStatus(kDefaultChildId, kDefaultRouteId));
 
   // This would call DestroyPrerenderForChildRouteIdPair(), if the prerender
   // were cancelled.
   RunEvents();
 
   // These functions should all behave as before.
-  EXPECT_FALSE(prerender_tracker()->TryCancel(0, 0, FINAL_STATUS_HTTPS));
+  EXPECT_FALSE(prerender_tracker()->TryCancel(
+      kDefaultChildId, kDefaultRouteId, FINAL_STATUS_CANCELLED));
   EXPECT_FALSE(prerender_tracker()->TryCancelOnIOThread(
-      0, 0, FINAL_STATUS_TIMED_OUT));
-  EXPECT_EQ(FINAL_STATUS_USED, GetCurrentStatus(0, 0));
-
-  // This calls DestroyPrerenderForChildRouteIdPair().
-  prerender_tracker()->OnPrerenderingFinished(0, 0);
-  EXPECT_TRUE(prerender_tracker()->IsPrerenderingOnIOThread(0, 0));
-
-  // This calls RemovePrerenderOnIOThreadTask().
-  RunEvents();
-
-  FinalStatus final_status;
-  EXPECT_FALSE(prerender_tracker()->GetFinalStatus(0, 0, &final_status));
-  EXPECT_FALSE(prerender_tracker()->IsPrerenderingOnIOThread(0, 0));
-  EXPECT_FALSE(prerender_tracker()->TryCancel(0, 0, FINAL_STATUS_HTTPS));
-  EXPECT_FALSE(prerender_manager()->WasPrerenderCancelled(0, 0));
+      kDefaultChildId, kDefaultRouteId, FINAL_STATUS_TIMED_OUT));
+  EXPECT_EQ(FINAL_STATUS_USED, GetCurrentStatus(
+      kDefaultChildId, kDefaultRouteId));
+
+  // This calls DestroyPrerenderForChildRouteIdPair().
+  test_contents()->Use();
+  EXPECT_TRUE(prerender_tracker()->IsPrerenderingOnIOThread(
+      kDefaultChildId, kDefaultRouteId));
+
+  // This calls RemovePrerenderOnIOThreadTask().
+  RunEvents();
+
+  FinalStatus final_status;
+  EXPECT_FALSE(prerender_tracker()->GetFinalStatus(
+      kDefaultChildId, kDefaultRouteId, &final_status));
+  EXPECT_FALSE(prerender_tracker()->IsPrerenderingOnIOThread(
+      kDefaultChildId, kDefaultRouteId));
+  EXPECT_FALSE(prerender_tracker()->TryCancel(
+      kDefaultChildId, kDefaultRouteId, FINAL_STATUS_CANCELLED));
+  EXPECT_FALSE(prerender_manager()->WasPrerenderCancelled(
+      kDefaultChildId, kDefaultRouteId));
 }
 
 // Check that a prerendered page cancelled by TryCancel() is handled correctly.
 TEST_F(PrerenderTrackerTest, PrerenderTrackerCancelled) {
-  prerender_tracker()->OnPrerenderingStarted(0, 0, prerender_manager());
-  EXPECT_EQ(FINAL_STATUS_MAX, GetCurrentStatus(0, 0));
+  test_contents()->Start();
+  EXPECT_EQ(FINAL_STATUS_MAX,
+            GetCurrentStatus(kDefaultChildId, kDefaultRouteId));
 
   // This calls AddPrerenderOnIOThreadTask().
   RunEvents();
 
   // Cancel the prerender.
-  EXPECT_TRUE(prerender_tracker()->TryCancel(0, 0, FINAL_STATUS_HTTPS));
-
-  EXPECT_FALSE(prerender_tracker()->TryUse(0, 0));
-  EXPECT_TRUE(prerender_tracker()->TryCancel(0, 0, FINAL_STATUS_TIMED_OUT));
-  EXPECT_TRUE(prerender_tracker()->TryCancelOnIOThread(
-      0, 0, FINAL_STATUS_TIMED_OUT));
-  EXPECT_EQ(FINAL_STATUS_HTTPS, GetCurrentStatus(0, 0));
-
-  // This calls DestroyPrerenderForChildRouteIdPair().
-  RunEvents();
-  EXPECT_TRUE(prerender_manager()->WasPrerenderCancelled(0, 0));
+  EXPECT_TRUE(prerender_tracker()->TryCancel(
+      kDefaultChildId, kDefaultRouteId, FINAL_STATUS_CANCELLED));
+
+  EXPECT_FALSE(prerender_tracker()->TryUse(kDefaultChildId, kDefaultRouteId));
+  EXPECT_TRUE(prerender_tracker()->TryCancel(
+      kDefaultChildId, kDefaultRouteId, FINAL_STATUS_TIMED_OUT));
+  EXPECT_TRUE(prerender_tracker()->TryCancelOnIOThread(
+      kDefaultChildId, kDefaultRouteId, FINAL_STATUS_TIMED_OUT));
+  EXPECT_EQ(FINAL_STATUS_CANCELLED,
+            GetCurrentStatus(kDefaultChildId, kDefaultRouteId));
+
+  // This calls DestroyPrerenderForChildRouteIdPair().
+  RunEvents();
+  EXPECT_TRUE(prerender_manager()->WasPrerenderCancelled(
+      kDefaultChildId, kDefaultRouteId));
 
   // These should all work until the prerendering RenderViewHost is destroyed.
-  EXPECT_TRUE(prerender_tracker()->TryCancel(0, 0, FINAL_STATUS_TIMED_OUT));
-  EXPECT_TRUE(prerender_tracker()->TryCancelOnIOThread(
-      0, 0, FINAL_STATUS_TIMED_OUT));
-  EXPECT_EQ(FINAL_STATUS_HTTPS, GetCurrentStatus(0, 0));
-
-  prerender_tracker()->OnPrerenderingFinished(0, 0);
-  EXPECT_TRUE(prerender_tracker()->IsPrerenderingOnIOThread(0, 0));
-
-  // This calls RemovePrerenderOnIOThreadTask().
-  RunEvents();
-
-  FinalStatus final_status;
-  EXPECT_FALSE(prerender_tracker()->GetFinalStatus(0, 0, &final_status));
-  EXPECT_FALSE(prerender_tracker()->IsPrerenderingOnIOThread(0, 0));
+  EXPECT_TRUE(prerender_tracker()->TryCancel(
+      kDefaultChildId, kDefaultRouteId, FINAL_STATUS_TIMED_OUT));
+  EXPECT_TRUE(prerender_tracker()->TryCancelOnIOThread(
+      kDefaultChildId, kDefaultRouteId, FINAL_STATUS_TIMED_OUT));
+  EXPECT_EQ(FINAL_STATUS_CANCELLED,
+            GetCurrentStatus(kDefaultChildId, kDefaultRouteId));
+
+  test_contents()->Cancel();
+  EXPECT_TRUE(prerender_tracker()->IsPrerenderingOnIOThread(
+      kDefaultChildId, kDefaultRouteId));
+
+  // This calls RemovePrerenderOnIOThreadTask().
+  RunEvents();
+
+  FinalStatus final_status;
+  EXPECT_FALSE(prerender_tracker()->GetFinalStatus(
+      kDefaultChildId, kDefaultRouteId, &final_status));
+  EXPECT_FALSE(prerender_tracker()->IsPrerenderingOnIOThread(
+      kDefaultChildId, kDefaultRouteId));
 }
 
 // Check that a prerendered page cancelled on the IO thread by
 // TryCancelOnIOThread() is handled correctly.
 TEST_F(PrerenderTrackerTest, PrerenderTrackerCancelledOnIO) {
-  prerender_tracker()->OnPrerenderingStarted(0, 0, prerender_manager());
-  EXPECT_EQ(FINAL_STATUS_MAX, GetCurrentStatus(0, 0));
+  test_contents()->Start();
+  EXPECT_EQ(FINAL_STATUS_MAX,
+            GetCurrentStatus(kDefaultChildId, kDefaultRouteId));
 
   // This calls AddPrerenderOnIOThreadTask().
   RunEvents();
 
   // Cancel the prerender.
   EXPECT_TRUE(prerender_tracker()->TryCancelOnIOThread(
-      0, 0, FINAL_STATUS_TIMED_OUT));
-
-  EXPECT_FALSE(prerender_tracker()->TryUse(0, 0));
-  EXPECT_TRUE(prerender_tracker()->TryCancel(0, 0, FINAL_STATUS_HTTPS));
-  EXPECT_TRUE(prerender_tracker()->TryCancelOnIOThread(
-      0, 0, FINAL_STATUS_HTTPS));
-  EXPECT_EQ(FINAL_STATUS_TIMED_OUT, GetCurrentStatus(0, 0));
-
-  // This calls DestroyPrerenderForChildRouteIdPair().
-  RunEvents();
-  EXPECT_TRUE(prerender_manager()->WasPrerenderCancelled(0, 0));
+      kDefaultChildId, kDefaultRouteId, FINAL_STATUS_TIMED_OUT));
+
+  EXPECT_FALSE(prerender_tracker()->TryUse(kDefaultChildId, kDefaultRouteId));
+  EXPECT_TRUE(prerender_tracker()->TryCancel(kDefaultChildId, kDefaultRouteId,
+                                             FINAL_STATUS_CANCELLED));
+  EXPECT_TRUE(prerender_tracker()->TryCancelOnIOThread(
+      kDefaultChildId, kDefaultRouteId, FINAL_STATUS_CANCELLED));
+  EXPECT_EQ(FINAL_STATUS_TIMED_OUT,
+            GetCurrentStatus(kDefaultChildId, kDefaultRouteId));
+
+  // This calls DestroyPrerenderForChildRouteIdPair().
+  RunEvents();
+  EXPECT_TRUE(prerender_manager()->WasPrerenderCancelled(
+      kDefaultChildId, kDefaultRouteId));
 
   // These should all work until the prerendering RenderViewHost is destroyed.
-  EXPECT_TRUE(prerender_tracker()->TryCancel(0, 0, FINAL_STATUS_HTTPS));
-  EXPECT_TRUE(prerender_tracker()->TryCancelOnIOThread(
-      0, 0, FINAL_STATUS_HTTPS));
-  EXPECT_EQ(FINAL_STATUS_TIMED_OUT, GetCurrentStatus(0, 0));
-
-  prerender_tracker()->OnPrerenderingFinished(0, 0);
-  EXPECT_TRUE(prerender_tracker()->IsPrerenderingOnIOThread(0, 0));
-
-  // This calls RemovePrerenderOnIOThreadTask().
-  RunEvents();
-
-  FinalStatus final_status;
-  EXPECT_FALSE(prerender_tracker()->GetFinalStatus(0, 0, &final_status));
-  EXPECT_FALSE(prerender_tracker()->IsPrerenderingOnIOThread(0, 0));
+  EXPECT_TRUE(prerender_tracker()->TryCancel(
+      kDefaultChildId, kDefaultRouteId, FINAL_STATUS_CANCELLED));
+  EXPECT_TRUE(prerender_tracker()->TryCancelOnIOThread(
+      kDefaultChildId, kDefaultRouteId, FINAL_STATUS_CANCELLED));
+  EXPECT_EQ(FINAL_STATUS_TIMED_OUT,
+            GetCurrentStatus(kDefaultChildId, kDefaultRouteId));
+
+  test_contents()->Cancel();
+  EXPECT_TRUE(prerender_tracker()->IsPrerenderingOnIOThread(
+      kDefaultChildId, kDefaultRouteId));
+
+  // This calls RemovePrerenderOnIOThreadTask().
+  RunEvents();
+
+  FinalStatus final_status;
+  EXPECT_FALSE(prerender_tracker()->GetFinalStatus(
+      kDefaultChildId, kDefaultRouteId, &final_status));
+  EXPECT_FALSE(prerender_tracker()->IsPrerenderingOnIOThread(
+      kDefaultChildId, kDefaultRouteId));
 }
 
 // Check that a prerendered page cancelled before it reaches the IO thread is
 // handled correctly.
 TEST_F(PrerenderTrackerTest, PrerenderTrackerCancelledFast) {
-  prerender_tracker()->OnPrerenderingStarted(0, 0, prerender_manager());
+  test_contents()->Start();
+
   // Cancel the prerender.
-  EXPECT_TRUE(prerender_tracker()->TryCancel(0, 0, FINAL_STATUS_HTTPS));
-
-  EXPECT_FALSE(prerender_tracker()->TryUse(0, 0));
-  EXPECT_TRUE(prerender_tracker()->TryCancel(0, 0, FINAL_STATUS_TIMED_OUT));
+  EXPECT_TRUE(prerender_tracker()->TryCancel(
+      kDefaultChildId, kDefaultRouteId, FINAL_STATUS_CANCELLED));
+
+  EXPECT_FALSE(prerender_tracker()->TryUse(kDefaultChildId, kDefaultRouteId));
+  EXPECT_TRUE(prerender_tracker()->TryCancel(
+      kDefaultChildId, kDefaultRouteId, FINAL_STATUS_TIMED_OUT));
 
   // This calls AddPrerenderOnIOThreadTask() and
   // DestroyPrerenderForChildRouteIdPair().
   RunEvents();
-  EXPECT_TRUE(prerender_manager()->WasPrerenderCancelled(0, 0));
-
-  EXPECT_TRUE(prerender_tracker()->TryCancelOnIOThread(
-      0, 0, FINAL_STATUS_TIMED_OUT));
-  EXPECT_TRUE(prerender_tracker()->TryCancel(0, 0, FINAL_STATUS_TIMED_OUT));
-  EXPECT_EQ(FINAL_STATUS_HTTPS, GetCurrentStatus(0, 0));
-
-  prerender_tracker()->OnPrerenderingFinished(0, 0);
-
-  // This calls RemovePrerenderOnIOThreadTask().
-  RunEvents();
-
-  FinalStatus final_status;
-  EXPECT_FALSE(prerender_tracker()->GetFinalStatus(0, 0, &final_status));
-  EXPECT_FALSE(prerender_tracker()->IsPrerenderingOnIOThread(0, 0));
+  EXPECT_TRUE(prerender_manager()->WasPrerenderCancelled(
+      kDefaultChildId, kDefaultRouteId));
+
+  EXPECT_TRUE(prerender_tracker()->TryCancelOnIOThread(
+      kDefaultChildId, kDefaultRouteId, FINAL_STATUS_TIMED_OUT));
+  EXPECT_TRUE(prerender_tracker()->TryCancel(
+      kDefaultChildId, kDefaultRouteId, FINAL_STATUS_TIMED_OUT));
+  EXPECT_EQ(FINAL_STATUS_CANCELLED, GetCurrentStatus(
+      kDefaultChildId, kDefaultRouteId));
+
+  test_contents()->Cancel();
+
+  // This calls RemovePrerenderOnIOThreadTask().
+  RunEvents();
+
+  FinalStatus final_status;
+  EXPECT_FALSE(prerender_tracker()->GetFinalStatus(
+      kDefaultChildId, kDefaultRouteId, &final_status));
+  EXPECT_FALSE(prerender_tracker()->IsPrerenderingOnIOThread(
+      kDefaultChildId, kDefaultRouteId));
 }
 
 // Check that handling two pages at once works.
 TEST_F(PrerenderTrackerTest, PrerenderTrackerMultiple) {
-  prerender_tracker()->OnPrerenderingStarted(0, 0, prerender_manager());
-
-  // This calls AddPrerenderOnIOThreadTask().
-  RunEvents();
-  EXPECT_TRUE(prerender_tracker()->IsPrerenderingOnIOThread(0, 0));
-  EXPECT_FALSE(prerender_tracker()->IsPrerenderingOnIOThread(1, 2));
-  EXPECT_FALSE(prerender_tracker()->TryUse(1, 2));
-  EXPECT_FALSE(prerender_tracker()->TryCancel(1, 2, FINAL_STATUS_HTTPS));
+  test_contents()->Start();
+
+  // This calls AddPrerenderOnIOThreadTask().
+  RunEvents();
+  EXPECT_TRUE(prerender_tracker()->IsPrerenderingOnIOThread(
+      kDefaultChildId, kDefaultRouteId));
+  EXPECT_FALSE(prerender_tracker()->IsPrerenderingOnIOThread(
+      kDefaultChildId + 1, kDefaultRouteId + 1));
+  EXPECT_FALSE(prerender_tracker()->TryUse(
+      kDefaultChildId + 1, kDefaultRouteId + 1));
+  EXPECT_FALSE(prerender_tracker()->TryCancel(
+      kDefaultChildId + 1, kDefaultRouteId + 1, FINAL_STATUS_CANCELLED));
 
   // Start second prerender.
-  prerender_tracker()->OnPrerenderingStarted(1, 2, prerender_manager());
-  // This calls AddPrerenderOnIOThreadTask().
-  RunEvents();
-
-  // Use (0, 0).
-  EXPECT_TRUE(prerender_tracker()->TryUse(0, 0));
-  EXPECT_EQ(FINAL_STATUS_USED, GetCurrentStatus(0, 0));
-  EXPECT_EQ(FINAL_STATUS_MAX, GetCurrentStatus(1, 2));
-
-  // Cancel (1, 2).
-  EXPECT_TRUE(prerender_tracker()->TryCancelOnIOThread(
-      1, 2, FINAL_STATUS_HTTPS));
-
-  EXPECT_FALSE(prerender_tracker()->TryCancel(0, 0, FINAL_STATUS_HTTPS));
-  EXPECT_EQ(FINAL_STATUS_USED, GetCurrentStatus(0, 0));
-
-  EXPECT_FALSE(prerender_tracker()->TryUse(1, 2));
-  EXPECT_TRUE(prerender_tracker()->TryCancel(1, 2, FINAL_STATUS_HTTPS));
-  EXPECT_EQ(FINAL_STATUS_HTTPS, GetCurrentStatus(1, 2));
-
-  // This calls DestroyPrerenderForChildRouteIdPair().
-  RunEvents();
-  EXPECT_FALSE(prerender_manager()->WasPrerenderCancelled(0, 0));
-  EXPECT_TRUE(prerender_manager()->WasPrerenderCancelled(1, 2));
-
-  prerender_tracker()->OnPrerenderingFinished(0, 0);
-  prerender_tracker()->OnPrerenderingFinished(1, 2);
-
-  // This calls RemovePrerenderOnIOThreadTask().
-  RunEvents();
-
-  FinalStatus final_status;
-  EXPECT_FALSE(prerender_tracker()->GetFinalStatus(0, 0, &final_status));
-  EXPECT_FALSE(prerender_tracker()->IsPrerenderingOnIOThread(0, 0));
-
-  EXPECT_FALSE(prerender_tracker()->GetFinalStatus(1, 2, &final_status));
-  EXPECT_FALSE(prerender_tracker()->IsPrerenderingOnIOThread(1, 2));
+  TestPrerenderContents second_test_contents(prerender_manager(),
+                                             kDefaultChildId + 1,
+                                             kDefaultRouteId + 1);
+
+  second_test_contents.Start();
+  // This calls AddPrerenderOnIOThreadTask().
+  RunEvents();
+
+  // Use (kDefaultChildId, kDefaultRouteId).
+  EXPECT_TRUE(prerender_tracker()->TryUse(kDefaultChildId, kDefaultRouteId));
+  EXPECT_EQ(FINAL_STATUS_USED, GetCurrentStatus(
+      kDefaultChildId, kDefaultRouteId));
+  EXPECT_EQ(FINAL_STATUS_MAX,
+            GetCurrentStatus(kDefaultChildId + 1, kDefaultRouteId + 1));
+
+  // Cancel (kDefaultChildId + 1, kDefaultRouteId + 1).
+  EXPECT_TRUE(prerender_tracker()->TryCancelOnIOThread(
+      kDefaultChildId + 1, kDefaultRouteId + 1, FINAL_STATUS_CANCELLED));
+
+  EXPECT_FALSE(prerender_tracker()->TryCancel(
+      kDefaultChildId, kDefaultRouteId, FINAL_STATUS_CANCELLED));
+  EXPECT_EQ(FINAL_STATUS_USED,
+            GetCurrentStatus(kDefaultChildId, kDefaultRouteId));
+
+  EXPECT_FALSE(prerender_tracker()->TryUse(
+      kDefaultChildId + 1, kDefaultRouteId + 1));
+  EXPECT_TRUE(prerender_tracker()->TryCancel(
+      kDefaultChildId + 1, kDefaultRouteId + 1, FINAL_STATUS_CANCELLED));
+  EXPECT_EQ(FINAL_STATUS_CANCELLED,
+            GetCurrentStatus(kDefaultChildId + 1, kDefaultRouteId + 1));
+
+  // This calls DestroyPrerenderForChildRouteIdPair().
+  RunEvents();
+  EXPECT_FALSE(prerender_manager()->WasPrerenderCancelled(kDefaultChildId,
+                                                          kDefaultRouteId));
+  EXPECT_TRUE(prerender_manager()->WasPrerenderCancelled(kDefaultChildId + 1,
+                                                         kDefaultRouteId + 1));
+
+  test_contents()->Cancel();
+  second_test_contents.Cancel();
+
+  // This calls RemovePrerenderOnIOThreadTask().
+  RunEvents();
+
+  FinalStatus final_status;
+  EXPECT_FALSE(prerender_tracker()->GetFinalStatus(
+      kDefaultChildId, kDefaultRouteId, &final_status));
+  EXPECT_FALSE(prerender_tracker()->IsPrerenderingOnIOThread(
+      kDefaultChildId, kDefaultRouteId));
+
+  EXPECT_FALSE(prerender_tracker()->GetFinalStatus(
+      kDefaultChildId + 1, kDefaultRouteId + 1, &final_status));
+  EXPECT_FALSE(prerender_tracker()->IsPrerenderingOnIOThread(
+      kDefaultChildId + 1, kDefaultRouteId + 1));
 }
 
 }  // namespace prerender