DevTools: make throttler with timeout respect the timeout.

third_party/WebKit/Source/devtools/front_end/common/Throttler.js

Index: third_party/WebKit/Source/devtools/front_end/common/Throttler.js
diff --git a/third_party/WebKit/Source/devtools/front_end/common/Throttler.js b/third_party/WebKit/Source/devtools/front_end/common/Throttler.js
index 284f47e321ee8c04af82a43e97bcb43e4dd2d625..5465df5a4429ddc02808f9c973bbf6f86fae987a 100644
--- a/third_party/WebKit/Source/devtools/front_end/common/Throttler.js
+++ b/third_party/WebKit/Source/devtools/front_end/common/Throttler.js
@@ -13,11 +13,13 @@ WebInspector.Throttler = function(timeout)
     this._asSoonAsPossible = false;
     /** @type {?function():(!Promise.<?>)} */
     this._process = null;
+    this._lastCompleteTime = 0;
 }
 
 WebInspector.Throttler.prototype = {
     _processCompleted: function()
     {
+        this._lastCompleteTime = window.performance.now();
         this._isRunningProcess = false;
         if (this._process)
             this._innerSchedule(false);
@@ -53,7 +55,8 @@ WebInspector.Throttler.prototype = {
 
         // Run the first scheduled task instantly.
         var hasScheduledTasks = !!this._processTimeout || this._isRunningProcess;
-        asSoonAsPossible = !!asSoonAsPossible || !hasScheduledTasks;
+        var okToFire = window.performance.now() - this._lastCompleteTime > this._timeout;
+        asSoonAsPossible = !!asSoonAsPossible || (!hasScheduledTasks && okToFire);
 
         var forceTimerUpdate = asSoonAsPossible && !this._asSoonAsPossible;
         this._asSoonAsPossible = this._asSoonAsPossible || asSoonAsPossible;
@@ -61,6 +64,12 @@ WebInspector.Throttler.prototype = {
         this._innerSchedule(forceTimerUpdate);
     },
 
+    flush: function()
+    {
+        if (this._process)
+            this._onTimeout();
+    },
+
     /**
      * @param {boolean} forceTimerUpdate
      */