Revert of Discard compositor frames from unloaded web content

content/renderer/render_frame_impl.cc

Index: content/renderer/render_frame_impl.cc
diff --git a/content/renderer/render_frame_impl.cc b/content/renderer/render_frame_impl.cc
index 20e835f6f1fdfb91c607ee489b1b5ee144608ce5..4af9b671725620814b3f5d10384a881f4c68d83a 100644
--- a/content/renderer/render_frame_impl.cc
+++ b/content/renderer/render_frame_impl.cc
@@ -3607,7 +3607,6 @@
   // For new page navigations, the browser process needs to be notified of the
   // first paint of that page, so it can cancel the timer that waits for it.
   if (is_main_frame_ && !navigation_state->WasWithinSamePage()) {
-    GetRenderWidget()->IncrementContentSourceId();
     render_view_->QueueMessage(
         new ViewHostMsg_DidFirstPaintAfterLoad(render_view_->routing_id_),
         MESSAGE_DELIVERY_POLICY_WITH_VISUAL_STATE);
@@ -4880,8 +4879,6 @@
   // corresponding FrameNavigationEntry.
   params.page_state = SingleHistoryItemToPageState(item);
 
-  params.content_source_id = GetRenderWidget()->GetContentSourceId();
-
   params.method = request.httpMethod().latin1();
   if (params.method == "POST")
     params.post_id = ExtractPostId(item);