[scheduler] Throttle background frames with 1% CPU limit

chrome/browser/about_flags.cc

Index: chrome/browser/about_flags.cc
diff --git a/chrome/browser/about_flags.cc b/chrome/browser/about_flags.cc
index 251b2e804be568694c9dfb7f3337b5f04cb17d74..f34ab865baa62328bec9f752d55b627c02b6e57f 100644
--- a/chrome/browser/about_flags.cc
+++ b/chrome/browser/about_flags.cc
@@ -908,9 +908,7 @@ const FeatureEntry kFeatureEntries[] = {
      SINGLE_VALUE_TYPE_AND_VALUE(switches::kAllowNaClSocketAPI, "*")},
 #endif
 #if defined(OS_CHROMEOS)
-    {"mash",
-     IDS_FLAGS_USE_MASH_NAME,
-     IDS_FLAGS_USE_MASH_DESCRIPTION, kOsCrOS,
+    {"mash", IDS_FLAGS_USE_MASH_NAME, IDS_FLAGS_USE_MASH_DESCRIPTION, kOsCrOS,
      SINGLE_VALUE_TYPE("mash")},
     {"allow-touchpad-three-finger-click",
      IDS_FLAGS_ALLOW_TOUCHPAD_THREE_FINGER_CLICK_NAME,
@@ -2103,6 +2101,10 @@ const FeatureEntry kFeatureEntries[] = {
     {"material-security-verbose", IDS_FLAGS_MATERIAL_SECURITY_VERBOSE_NAME,
      IDS_FLAGS_MATERIAL_SECURITY_VERBOSE_DESCRIPTION, kOsDesktop,
      MULTI_VALUE_TYPE(kSecurityVerboseChoices)},
+    {"expensive-background-timer-throttling",
+     IDS_FLAGS_EXPENSIVE_BACKGROUND_TIMER_THROTTLING_NAME,
+     IDS_FLAGS_EXPENSIVE_BACKGROUND_TIMER_THROTTLING_DESCRIPTION, kOsAll,
+     FEATURE_VALUE_TYPE(features::kExpensiveBackgroundTimerThrottling)},
     // NOTE: Adding new command-line switches requires adding corresponding
     // entries to enum "LoginCustomFlags" in histograms.xml. See note in
     // histograms.xml and don't forget to run AboutFlagsHistogramTest unit test.