Add a flag disable background timer alignment

components/scheduler/renderer/renderer_web_scheduler_impl.cc

Index: components/scheduler/renderer/renderer_web_scheduler_impl.cc
diff --git a/components/scheduler/renderer/renderer_web_scheduler_impl.cc b/components/scheduler/renderer/renderer_web_scheduler_impl.cc
index 922b1bdc7bd44acebe151bbd9b12b9f2278b71ef..4faa08173e2bb1cf11d241fb8cadba5622e41235 100644
--- a/components/scheduler/renderer/renderer_web_scheduler_impl.cc
+++ b/components/scheduler/renderer/renderer_web_scheduler_impl.cc
@@ -4,7 +4,9 @@
 
 #include "components/scheduler/renderer/renderer_web_scheduler_impl.h"
 
+#include "base/command_line.h"
 #include "components/scheduler/base/task_queue.h"
+#include "components/scheduler/common/scheduler_switches.h"
 #include "components/scheduler/renderer/renderer_scheduler_impl.h"
 #include "components/scheduler/renderer/web_view_scheduler_impl.h"
 #include "third_party/WebKit/public/platform/WebPassOwnPtr.h"
@@ -32,8 +34,10 @@ void RendererWebSchedulerImpl::resumeTimerQueue() {
 
 blink::WebPassOwnPtr<blink::WebViewScheduler>
 RendererWebSchedulerImpl::createWebViewScheduler(blink::WebView* web_view) {
-  return blink::adoptWebPtr(
-      new WebViewSchedulerImpl(web_view, renderer_scheduler_));
+  base::CommandLine* command_line = base::CommandLine::ForCurrentProcess();
+  return blink::adoptWebPtr(new WebViewSchedulerImpl(
+      web_view, renderer_scheduler_,
+      command_line->HasSwitch(switches::kDisableBackgroundTimerThrottling)));
 }
 
 void RendererWebSchedulerImpl::addPendingNavigation() {