Automatically redraw the display on resume.

services/surfaces/display_impl.cc

Index: services/surfaces/display_impl.cc
diff --git a/services/surfaces/display_impl.cc b/services/surfaces/display_impl.cc
index 217ebc5d70488fbcc7bf83cf55ad86e2b790b836..4d99b5c6f459670e7d6f186c3e75ef6404410e83 100644
--- a/services/surfaces/display_impl.cc
+++ b/services/surfaces/display_impl.cc
@@ -4,6 +4,7 @@
 
 #include "services/surfaces/display_impl.h"
 
+#include "base/bind.h"
 #include "cc/output/compositor_frame.h"
 #include "cc/surfaces/display.h"
 #include "mojo/converters/geometry/geometry_type_converters.h"
@@ -33,6 +34,9 @@ DisplayImpl::DisplayImpl(cc::SurfaceManager* manager,
       returner_(returner.Pass()),
       viewport_param_binding_(this),
       display_binding_(this, display_request.Pass()) {
+  context_provider_->NotifyOnViewportCreated(
+      base::Bind(&DisplayImpl::OnViewportCreated, base::Unretained(this)));
+
   mojo::ViewportParameterListenerPtr viewport_parameter_listener;
   viewport_param_binding_.Bind(GetProxy(&viewport_parameter_listener));
   context_provider_->Create(
@@ -77,14 +81,21 @@ void DisplayImpl::Draw() {
       pending_frame_->passes[0]->output_rect.To<gfx::Rect>().size();
   last_submitted_frame_size_ = frame_size;
   display_->Resize(frame_size);
-  factory_.SubmitFrame(cc_id_,
-                       pending_frame_.To<scoped_ptr<cc::CompositorFrame>>(),
-                       base::Bind(&CallCallback, pending_callback_));
+  factory_.SubmitFrame(
+      cc_id_, pending_frame_.Clone().To<scoped_ptr<cc::CompositorFrame>>(),
+      base::Bind(&CallCallback, pending_callback_));
   scheduler_->SetNeedsDraw();
-  pending_frame_.reset();
   pending_callback_.reset();
 }
 
+void DisplayImpl::OnViewportCreated() {
+  if (display_ && pending_frame_) {
+    Draw();
+  }
+  context_provider_->NotifyOnViewportCreated(
+      base::Bind(&DisplayImpl::OnViewportCreated, base::Unretained(this)));
+}
+
 void DisplayImpl::DisplayDamaged() {
 }