[scheduler] Initial budget for time-based throttling.

third_party/WebKit/Source/platform/scheduler/renderer/task_queue_throttler.cc

Index: third_party/WebKit/Source/platform/scheduler/renderer/task_queue_throttler.cc
diff --git a/third_party/WebKit/Source/platform/scheduler/renderer/task_queue_throttler.cc b/third_party/WebKit/Source/platform/scheduler/renderer/task_queue_throttler.cc
index 64b93af39e2fe497200e2def193de4d0259e444c..bb095ca4604a48b28b3bdefe32bb95d2d61b9daf 100644
--- a/third_party/WebKit/Source/platform/scheduler/renderer/task_queue_throttler.cc
+++ b/third_party/WebKit/Source/platform/scheduler/renderer/task_queue_throttler.cc
@@ -81,8 +81,9 @@ TaskQueueThrottler::TimeBudgetPool::TimeBudgetPool(
 
 TaskQueueThrottler::TimeBudgetPool::~TimeBudgetPool() {}
 
-void TaskQueueThrottler::TimeBudgetPool::SetTimeBudget(base::TimeTicks now,
-                                                       double cpu_percentage) {
+void TaskQueueThrottler::TimeBudgetPool::SetTimeBudgetRecoveryRate(
+    base::TimeTicks now,
+    double cpu_percentage) {
   Advance(now);
   cpu_percentage_ = cpu_percentage;
   EnforceBudgetLevelRestrictions();
@@ -155,6 +156,14 @@ bool TaskQueueThrottler::TimeBudgetPool::IsThrottlingEnabled() const {
   return is_enabled_;
 }
 
+void TaskQueueThrottler::TimeBudgetPool::GrantAdditionalBudget(
+    base::TimeTicks now,
+    base::TimeDelta budget_level) {
+  Advance(now);
+  current_budget_level_ += budget_level;
+  EnforceBudgetLevelRestrictions();
+}
+
 void TaskQueueThrottler::TimeBudgetPool::SetReportingCallback(
     base::Callback<void(base::TimeDelta)> reporting_callback) {
   reporting_callback_ = reporting_callback;