[scheduler] Throttle background frames with 1% CPU limit

content/public/common/content_features.cc

Index: content/public/common/content_features.cc
diff --git a/content/public/common/content_features.cc b/content/public/common/content_features.cc
index 66ecbba63120635235ca8b08019cd66e73d2f6b2..42755a6ef7093169397c6cf52a7ccbc50fbd5f9a 100644
--- a/content/public/common/content_features.cc
+++ b/content/public/common/content_features.cc
@@ -35,6 +35,11 @@ const base::Feature kDefaultEnableGpuRasterization{
 const base::Feature kDocumentWriteEvaluator{"DocumentWriteEvaluator",
                                             base::FEATURE_DISABLED_BY_DEFAULT};
 
+// Throttle tasks in Blink background timer queues based on CPU budgets
+// for the background tab. Bug: crbug.com/639852.

[alex clarke (OOO till 29th), 2016/09/27 16:32:10]

Maybe: See http://crbug.com/639852

[altimin, 2016/09/27 17:38:23]

https :) Done.

+const base::Feature kExpensiveBackgroundTimerThrottling{
+    "ExpensiveBackgroundTimerThrottling", base::FEATURE_DISABLED_BY_DEFAULT};
+
 // Enables the Feature Policy framework for granting and removing access to
 // other features through HTTP headers.
 const base::Feature kFeaturePolicy{"FeaturePolicy",