Automatically redraw the display on resume.

mojo/services/gpu/public/interfaces/context_provider.mojom

Index: mojo/services/gpu/public/interfaces/context_provider.mojom
diff --git a/mojo/services/gpu/public/interfaces/context_provider.mojom b/mojo/services/gpu/public/interfaces/context_provider.mojom
index 59d3b7b84aebfc4a7593bb9476ce3c16d84ec2cd..327e5d2d73631f5c525f0cc63b201759c5e60ec5 100644
--- a/mojo/services/gpu/public/interfaces/context_provider.mojom
+++ b/mojo/services/gpu/public/interfaces/context_provider.mojom
@@ -25,4 +25,8 @@ interface ContextProvider {
   // before a previous call returns.
   Create(ViewportParameterListener? viewport_parameter_listener)
       => (CommandBuffer? gles2_client);
+
+  // The callback for this method will be called when a new viewport is

[jamesr, 2015/05/01 00:15:40]

this shouldn't be needed - the callback to Create() will be called when a new
buffer is created, won't it?

+  // created and passed to this ContextProvider.
+  NotifyOnViewportCreated() => ();
 };