Expose Resume() in RenderProcessHost.

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 187babe1cf881fc23d2884f99be4362f560aeb62..c06587785b19897f094d41a5212a3239fbbce561 100644
--- a/content/public/test/mock_render_process_host.cc
+++ b/content/public/test/mock_render_process_host.cc
@@ -300,6 +300,8 @@ bool MockRenderProcessHost::IsWorkerRefCountDisabled() {
 
 void MockRenderProcessHost::PurgeAndSuspend() {}
 
+void MockRenderProcessHost::Resume() {}
+
 mojom::Renderer* MockRenderProcessHost::GetRendererInterface() {
   if (!renderer_interface_) {
     renderer_interface_.reset(new mojom::RendererAssociatedPtr);