Removed requirement for the renderer to know it's process ID

content/browser/renderer_host/render_widget_host_impl.cc

Index: content/browser/renderer_host/render_widget_host_impl.cc
diff --git a/content/browser/renderer_host/render_widget_host_impl.cc b/content/browser/renderer_host/render_widget_host_impl.cc
index f506e75b7c644d043d2ad00c553be1df08acc4c0..f2249169230517f153ec99cf159b384a9eaf3503 100644
--- a/content/browser/renderer_host/render_widget_host_impl.cc
+++ b/content/browser/renderer_host/render_widget_host_impl.cc
@@ -1478,6 +1478,7 @@ void RenderWidgetHostImpl::OnCompositorSurfaceBuffersSwapped(
   gpu_params.size = params.size;
   gpu_params.scale_factor = params.scale_factor;
   gpu_params.latency_info = params.latency_info;
+  gpu_params.latency_info.AnnotateComponentsWithProcessId(process_->GetID());
   view_->AcceleratedSurfaceBuffersSwapped(gpu_params,
                                           params.gpu_process_host_id);
   view_->DidReceiveRendererFrame();
@@ -1493,6 +1494,9 @@ bool RenderWidgetHostImpl::OnSwapCompositorFrame(
   uint32 output_surface_id = param.a;
   param.b.AssignTo(frame.get());
 
+  ui::LatencyInfo::AnnotateWithProcessId(frame->metadata.latency_info,
+      process_->GetID());
+
   bool fixed_page_scale =
       frame->metadata.min_page_scale_factor ==
           frame->metadata.max_page_scale_factor;
@@ -1661,9 +1665,17 @@ void RenderWidgetHostImpl::DidUpdateBackingStore(
 
   // Now paint the view. Watch out: it might be destroyed already.
   if (view_ && !is_accelerated_compositing_active_) {
+
+    std::vector<ui::LatencyInfo> latency_info;
+    for (size_t i = 0; i < params.latency_info.size(); i++) {
+      ui::LatencyInfo info = params.latency_info[i];
+      info.AnnotateComponentsWithProcessId(process_->GetID());
+      latency_info.push_back(info);
+    }
+
     view_being_painted_ = true;
     view_->DidUpdateBackingStore(params.scroll_rect, params.scroll_delta,
-                                 params.copy_rects, params.latency_info);
+                                 params.copy_rects, latency_info);
     view_->DidReceiveRendererFrame();
     view_being_painted_ = false;
   }