Infrastructure for temportarily relinquishing GPU resources.

ui/ozone/public/gpu_platform_support.h

Index: ui/ozone/public/gpu_platform_support.h
diff --git a/ui/ozone/public/gpu_platform_support.h b/ui/ozone/public/gpu_platform_support.h
index c912fa0af7898496f960ae4deaacf524d9c7d596..b164e87ed3e8b16d23744860fd09f6de9342790d 100644
--- a/ui/ozone/public/gpu_platform_support.h
+++ b/ui/ozone/public/gpu_platform_support.h
@@ -5,6 +5,7 @@
 #ifndef UI_OZONE_PUBLIC_GPU_PLATFORM_SUPPORT_H_
 #define UI_OZONE_PUBLIC_GPU_PLATFORM_SUPPORT_H_
 
+#include "base/callback.h"
 #include "ipc/ipc_listener.h"
 #include "ipc/ipc_sender.h"
 #include "ui/ozone/ozone_base_export.h"
@@ -21,6 +22,8 @@ class OZONE_BASE_EXPORT GpuPlatformSupport : public IPC::Listener {
 
   // Called when the GPU process is spun up & channel established.
   virtual void OnChannelEstablished(IPC::Sender* sender) = 0;
+
+  virtual void RelinquishGpuResources(const base::Closure& callback);

[spang, 2014/11/20 18:08:22]

Er, one last nit:

can you leave this as a pure interface and move the no-op implementation
to StubGpuPlatformSupport?

[GusFernandez, 2014/11/20 21:42:48]

I also had to implement a stub implementation for the DRI platform.

 };
 
 // Create a stub implementation.