Upstream support for WebKit shared timer toggling.

content/renderer/render_thread_impl.cc

Index: content/renderer/render_thread_impl.cc
diff --git a/content/renderer/render_thread_impl.cc b/content/renderer/render_thread_impl.cc
index 0cb91368ccc5c37f0bc30a9faf469f5268b5da20..4d96d4548aa433d6373e371d5cd574a4de43eed0 100644
--- a/content/renderer/render_thread_impl.cc
+++ b/content/renderer/render_thread_impl.cc
@@ -728,6 +728,21 @@ void RenderThreadImpl::SetIdleNotificationDelayInMs(
   idle_notification_delay_in_ms_ = idle_notification_delay_in_ms;
 }
 
+void RenderThreadImpl::ToggleWebKitSharedTimer(bool suspend) {
+  if (suspend_webkit_shared_timer_) {
+    EnsureWebKitInitialized();
+    if (suspend) {
+      webkit_platform_support_->SuspendSharedTimer();
+    } else {
+      webkit_platform_support_->ResumeSharedTimer();
+    }
+  }
+}
+
+void RenderThreadImpl::UpdateHistograms(int sequence_number) {
+  child_histogram_message_filter()->SendHistograms(sequence_number);
+}
+
 void RenderThreadImpl::PostponeIdleNotification() {
   idle_notifications_to_skip_ = 2;
 }
@@ -775,10 +790,6 @@ void RenderThreadImpl::ReleaseCachedFonts() {
 
 #endif  // OS_WIN
 
-void RenderThreadImpl::UpdateHistograms(int sequence_number) {
-  child_histogram_message_filter()->SendHistograms(sequence_number);
-}
-
 bool RenderThreadImpl::IsWebFrameValid(WebKit::WebFrame* web_frame) {
   if (!web_frame)
     return false; // We must be shutting down.