GRC: Hook up process-level CoordinationUnits in the browser process

content/public/test/mock_render_process_host.cc

Index: content/public/test/mock_render_process_host.cc
diff --git a/content/public/test/mock_render_process_host.cc b/content/public/test/mock_render_process_host.cc
index 878462df64540bcff20222e5beb4ae36ae766cdc..1a1bea63e2b4065dcdfff510e2b9e302ceffd6fb 100644
--- a/content/public/test/mock_render_process_host.cc
+++ b/content/public/test/mock_render_process_host.cc
@@ -330,6 +330,12 @@ mojom::Renderer* MockRenderProcessHost::GetRendererInterface() {
   return renderer_interface_->get();
 }
 
+resource_coordinator::ResourceCoordinatorInterface*
+MockRenderProcessHost::GetProcessResourceCoordinator() {
+  NOTREACHED();
+  return nullptr;
+}
+
 void MockRenderProcessHost::SetIsNeverSuitableForReuse() {
   NOTREACHED();
 }