Limit prerender by only allowing one every X ms (X currently set to 500).

chrome/browser/prerender/prerender_manager_unittest.cc

 // Copyright (c) 2010 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 "base/time.h"
 #include "chrome/browser/prerender/prerender_contents.h"
 #include "chrome/browser/prerender/prerender_manager.h"
 #include "content/browser/browser_thread.h"
 #include "googleurl/src/gurl.h"
 #include "testing/gtest/include/gtest/gtest.h"
@@ skipping 84 matching lines @@
   base::Time time_;
   scoped_ptr<PrerenderContents> next_pc_;
 };
 
 }  // namespace
 
 class PrerenderManagerTest : public testing::Test {
  public:
   PrerenderManagerTest() : prerender_manager_(new TestPrerenderManager()),
                            ui_thread_(BrowserThread::UI, &message_loop_) {
+    PrerenderManager::set_rate_limit_enabled(false);

[cbentzel, 2011/03/14 14:40:32]

This should restore the value in teardown.

[dominich, 2011/03/14 18:10:10]

When it's no longer static, this is unnecessary.

   }
 
  protected:
   scoped_refptr<TestPrerenderManager> prerender_manager_;
 
  private:
   // Needed to pass PrerenderManager's DCHECKs.
   MessageLoop message_loop_;
   BrowserThread ui_thread_;
 };
@@ skipping 151 matching lines @@
   EXPECT_FALSE(prerender_manager_->AddSimplePreload(url));
   EXPECT_FALSE(prerender_manager_->AddSimplePreload(alias_url1));
   EXPECT_FALSE(prerender_manager_->AddSimplePreload(alias_url2));
   ASSERT_EQ(pc, prerender_manager_->GetEntry(url));
 
   pc->set_final_status(FINAL_STATUS_USED);
   delete pc;
 }
 
 }  // naemspace prerender