Additional fixes for prerender/instant + browsing history.

content/browser/tab_contents/test_tab_contents.h

Index: content/browser/tab_contents/test_tab_contents.h
diff --git a/content/browser/tab_contents/test_tab_contents.h b/content/browser/tab_contents/test_tab_contents.h
index fb7b1bc23ca3a8172e519c4b64d709e56eec3262..c5dcf3440341278ac847335f61033f9d44378e05 100644
--- a/content/browser/tab_contents/test_tab_contents.h
+++ b/content/browser/tab_contents/test_tab_contents.h
@@ -42,12 +42,12 @@ class TestTabContents : public TabContents {
 
   // Prevent interaction with views.
   virtual bool CreateRenderViewForRenderManager(
-      RenderViewHost* render_view_host);
-  virtual void UpdateRenderViewSizeForRenderManager() {}
+      RenderViewHost* render_view_host) OVERRIDE;
+  virtual void UpdateRenderViewSizeForRenderManager() OVERRIDE {}
 
   // Returns a clone of this TestTabContents. The returned object is also a
   // TestTabContents. The caller owns the returned object.
-  virtual TabContents* Clone();
+  virtual TabContents* Clone() OVERRIDE;
 
   // Creates a pending navigation to the given URL with the default parameters
   // and then commits the load with a page ID one larger than any seen. This
@@ -67,12 +67,33 @@ class TestTabContents : public TabContents {
   bool transition_cross_site;
 
   // Allow mocking of the RenderViewHostDelegate::View.
-  virtual RenderViewHostDelegate::View* GetViewDelegate();
+  virtual RenderViewHostDelegate::View* GetViewDelegate() OVERRIDE;
   void set_view_delegate(RenderViewHostDelegate::View* view) {
     delegate_view_override_ = view;
   }
+
+  // Establish expected arguments for |SetHistoryLengthAndPrune()|. When
+  // |SetHistoryLengthAndPrune()| is called, the arguments are compared
+  // with the expected arguments specified here.
+  void ExpectSetHistoryLengthAndPrune(const SiteInstance* site_instance,
+                                      int history_length,
+                                      int32 min_page_id);
+
+  // Compares the arguments passed in with the expected arguments passed in
+  // to |ExpectSetHistoryLengthAndPrune()|.
+  virtual void SetHistoryLengthAndPrune(const SiteInstance* site_instance,
+                                        int history_length,
+                                        int32 min_page_id) OVERRIDE;
+
  private:
   RenderViewHostDelegate::View* delegate_view_override_;
+
+  // Expectations for arguments of |SetHistoryLengthAndPrune()|.
+  bool expect_set_history_length_and_prune_;
+  scoped_refptr<const SiteInstance>
+    expect_set_history_length_and_prune_site_instance_;
+  int expect_set_history_length_and_prune_history_length_;
+  int32 expect_set_history_length_and_prune_min_page_id_;
 };
 
 #endif  // CONTENT_BROWSER_TAB_CONTENTS_TEST_TAB_CONTENTS_H_