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

components/component_updater/configurator_impl.cc

Index: components/component_updater/configurator_impl.cc
diff --git a/components/component_updater/configurator_impl.cc b/components/component_updater/configurator_impl.cc
index c4cb5fae555c6271bf4f65d9af3541420fc04ec6..9c4b68cab1a0acda604c87f7b89d2a55e7ebc584 100644
--- a/components/component_updater/configurator_impl.cc
+++ b/components/component_updater/configurator_impl.cc
@@ -33,7 +33,7 @@ const int kDelayOneHour = kDelayOneMinute * 60;
 // Debug values you can pass to --component-updater=value1,value2. Do not
 // use these values in production code.
 
-// Speed up component checking.
+// Speed up the initial component checking.
 const char kSwitchFastUpdate[] = "fast-update";
 
 // Add "testrequest=1" attribute to the update check request.
@@ -126,7 +126,7 @@ int ConfiguratorImpl::InitialDelay() const {
 }
 
 int ConfiguratorImpl::NextCheckDelay() const {
-  return fast_update_ ? 60 : (6 * kDelayOneHour);
+  return 6 * kDelayOneHour;
 }
 
 int ConfiguratorImpl::StepDelay() const {