Add prerender to ChromeOS.

chrome/browser/prerender/prerender_manager.h

Index: chrome/browser/prerender/prerender_manager.h
diff --git a/chrome/browser/prerender/prerender_manager.h b/chrome/browser/prerender/prerender_manager.h
index 9075243c7cd4e6e25e17cfe3a5fb7ffb172fd67a..de7e010bcc1157988e9622a95b30bc0b2ca829f8 100644
--- a/chrome/browser/prerender/prerender_manager.h
+++ b/chrome/browser/prerender/prerender_manager.h
@@ -41,6 +41,7 @@ struct hash<TabContents*> {
 
 namespace prerender {
 
+class PrerenderCondition;
 class PrerenderHistory;
 class PrerenderTracker;
 
@@ -195,6 +196,9 @@ class PrerenderManager : public base::SupportsWeakPtr<PrerenderManager>,
   const Config& config() const { return config_; }
   Config& mutable_config() { return config_; }
 
+  // Adds a condition. This is owned by the PrerenderManager.
+  void AddCondition(const PrerenderCondition* condition);
+
  protected:
   // Test that needs needs access to internal functions.
   FRIEND_TEST_ALL_PREFIXES(PrerenderManagerTest, ExpireTest);
@@ -414,6 +418,8 @@ class PrerenderManager : public base::SupportsWeakPtr<PrerenderManager>,
 
   scoped_ptr<PrerenderHistory> prerender_history_;
 
+  std::list<const PrerenderCondition*> prerender_conditions_;
+
   DISALLOW_COPY_AND_ASSIGN(PrerenderManager);
 };