fast-update flag only accelerates the first component update check.

chrome/browser/component_updater/chrome_component_updater_configurator_unittest.cc

 // Copyright 2015 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 <string>
 #include <vector>
 
 #include "base/command_line.h"
 #include "base/memory/ref_counted.h"
 #include "chrome/browser/component_updater/chrome_component_updater_configurator.h"
@@ skipping 15 matching lines @@
   const std::vector<GURL> pingUrls = config->PingUrl();
   EXPECT_TRUE(pingUrls.empty());
 }
 
 TEST(ChromeComponentUpdaterConfiguratorTest, TestFastUpdate) {
   base::CommandLine cmdline(*base::CommandLine::ForCurrentProcess());
   cmdline.AppendSwitchASCII(switches::kComponentUpdater, "fast-update");
 
   const auto config(MakeChromeComponentUpdaterConfigurator(&cmdline, nullptr));
 
-  ASSERT_EQ(10, config->InitialDelay());
-  CHECK_EQ(60, config->NextCheckDelay());
+  CHECK_EQ(10, config->InitialDelay());
+  CHECK_EQ(6 * 60 * 60, config->NextCheckDelay());
   CHECK_EQ(1, config->StepDelay());
   CHECK_EQ(2, config->OnDemandDelay());
   CHECK_EQ(10, config->UpdateDelay());
 }
 
 TEST(ChromeComponentUpdaterConfiguratorTest, TestOverrideUrl) {
   const char overrideUrl[] = "http://0.0.0.0/";
 
   base::CommandLine cmdline(*base::CommandLine::ForCurrentProcess());
 
@@ skipping 61 matching lines @@
     const ConfiguratorImpl config(cmdline, nullptr, false);
     const auto urls = config.UpdateUrl();
     ASSERT_EQ(2u, urls.size());
     ASSERT_STREQ(kUpdaterDefaultUrl, urls[0].spec().c_str());
     ASSERT_STREQ(kUpdaterFallbackUrl, urls[1].spec().c_str());
     ASSERT_EQ(config.UpdateUrl(), config.PingUrl());
   }
 }
 
 }  // namespace component_updater