[Android] Suspend shared timers for hidden renderers

content/child/child_thread_impl.cc

Index: content/child/child_thread_impl.cc
diff --git a/content/child/child_thread_impl.cc b/content/child/child_thread_impl.cc
index 3978af0b74a438b49b1758b62803fa11f0f28ca1..d1766e7c995d4552398dde73423542fb95defc26 100644
--- a/content/child/child_thread_impl.cc
+++ b/content/child/child_thread_impl.cc
@@ -627,6 +627,14 @@ bool ChildThreadImpl::OnControlMessageReceived(const IPC::Message& msg) {
   return false;
 }
 
+void ChildThreadImpl::OnProcessBackgrounded(bool backgrounded) {

[Sami, 2015/08/28 14:15:01]

Nothing changed here -- you just moved this around, right?

[jdduke (slow), 2015/08/31 18:36:08]

Yep, moved it to preserve ordering as I moved the declaration (had to make it
virtual).

+  // Set timer slack to maximum on main thread when in background.
+  base::TimerSlack timer_slack = base::TIMER_SLACK_NONE;
+  if (backgrounded)
+    timer_slack = base::TIMER_SLACK_MAXIMUM;
+  base::MessageLoop::current()->SetTimerSlack(timer_slack);
+}
+
 void ChildThreadImpl::OnShutdown() {
   base::MessageLoop::current()->Quit();
 }
@@ -705,12 +713,4 @@ bool ChildThreadImpl::IsInBrowserProcess() const {
   return browser_process_io_runner_;
 }
 
-void ChildThreadImpl::OnProcessBackgrounded(bool background) {
-  // Set timer slack to maximum on main thread when in background.
-  base::TimerSlack timer_slack = base::TIMER_SLACK_NONE;
-  if (background)
-    timer_slack = base::TIMER_SLACK_MAXIMUM;
-  base::MessageLoop::current()->SetTimerSlack(timer_slack);
-}
-
 }  // namespace content