Relocate ozone gbm overlay config cache to manager

ui/ozone/platform/drm/host/drm_overlay_manager.h

Index: ui/ozone/platform/drm/host/drm_overlay_manager.h
diff --git a/ui/ozone/platform/drm/host/drm_overlay_manager.h b/ui/ozone/platform/drm/host/drm_overlay_manager.h
index b52a9b647a71ba6a243161fc348b8fe70f3e7de0..754fae65b8dafcd4d44606bc8418777860e41a2f 100644
--- a/ui/ozone/platform/drm/host/drm_overlay_manager.h
+++ b/ui/ozone/platform/drm/host/drm_overlay_manager.h
@@ -6,27 +6,63 @@
 #define UI_OZONE_PLATFORM_DRM_HOST_DRM_OVERLAY_MANAGER_H_
 
 #include "base/macros.h"
+#include "ui/ozone/common/gpu/ozone_gpu_message_params.h"
+#include "ui/ozone/platform/drm/host/drm_overlay_manager_core.h"
+#include "ui/ozone/public/gpu_platform_support_host.h"
 #include "ui/ozone/public/overlay_manager_ozone.h"
 
 namespace ui {
 
-class DrmGpuPlatformSupportHost;
 class DrmWindowHostManager;
+class DrmGpuPlatformSupportHost;
 
-class DrmOverlayManager : public OverlayManagerOzone {
+class DrmOverlayManager : public OverlayManagerOzone,
+                          public GpuPlatformSupportHost {
  public:
   DrmOverlayManager(DrmGpuPlatformSupportHost* platform_support_host,
-                    DrmWindowHostManager* manager);
+                    DrmWindowHostManager* window_manager);
   ~DrmOverlayManager() override;
 
   // OverlayManagerOzone:
   scoped_ptr<OverlayCandidatesOzone> CreateOverlayCandidates(
       gfx::AcceleratedWidget w) override;
 
+  // GpuPlatformSupportHost:
+  void OnChannelEstablished(
+      int host_id,
+      scoped_refptr<base::SingleThreadTaskRunner> send_runner,
+      const base::Callback<void(IPC::Message*)>& sender) override;
+  void OnChannelDestroyed(int host_id) override;
+  bool OnMessageReceived(const IPC::Message& message) override;
+
+  void ResetCache();
+
  private:
-  DrmGpuPlatformSupportHost* platform_support_host_;
-  DrmWindowHostManager* window_manager_;
-  bool is_supported_;
+  // IPC handler.
+  class OverlayCandidatesIPC : public DrmOverlayManagerProxy {
+   public:
+    OverlayCandidatesIPC(DrmGpuPlatformSupportHost* platform_support,
+                         DrmOverlayManager* parent);
+    ~OverlayCandidatesIPC() override;
+    void RegisterHandler() override;
+    bool IsConnected() override;
+    void UnregisterHandler() override;
+    bool CheckOverlayCapabilities(
+        gfx::AcceleratedWidget widget,
+        const std::vector<OverlayCheck_Params>& new_params) override;
+
+   private:
+    DrmGpuPlatformSupportHost* platform_support_;
+    DrmOverlayManager* parent_;
+    DISALLOW_COPY_AND_ASSIGN(OverlayCandidatesIPC);
+  };
+
+  // Entry point for incoming IPC.
+  void OnOverlayResult(gfx::AcceleratedWidget widget,
+                       const std::vector<OverlayCheck_Params>& params);
+
+  scoped_ptr<OverlayCandidatesIPC> sender_;
+  scoped_ptr<DrmOverlayManagerCore> core_;
 
   DISALLOW_COPY_AND_ASSIGN(DrmOverlayManager);
 };