mus: Reconnect to gpu process when it dies.

services/ui/ws/gpu_service_proxy.h

Index: services/ui/ws/gpu_service_proxy.h
diff --git a/services/ui/ws/gpu_service_proxy.h b/services/ui/ws/gpu_service_proxy.h
index 514c53b548af6accdb2883721deb96dade77c360..cf037e6f4eb7c2d1706ea69972aa5daaeb1de51c 100644
--- a/services/ui/ws/gpu_service_proxy.h
+++ b/services/ui/ws/gpu_service_proxy.h
@@ -12,6 +12,7 @@
 #include "gpu/ipc/client/gpu_channel_host.h"
 #include "mojo/public/cpp/bindings/binding_set.h"
 #include "mojo/public/cpp/bindings/interface_request.h"
+#include "mojo/public/cpp/bindings/strong_binding.h"
 #include "services/ui/gpu/gpu_main.h"
 #include "services/ui/gpu/interfaces/gpu_service_internal.mojom.h"
 #include "services/ui/public/interfaces/gpu_service.mojom.h"
@@ -39,6 +40,7 @@ class GpuServiceProxy {
 
  private:
   void OnInitialized(const gpu::GPUInfo& gpu_info);
+  void OnGpuConnectionGone();
 
   GpuServiceProxyDelegate* const delegate_;
   int32_t next_client_id_;
@@ -47,6 +49,7 @@ class GpuServiceProxy {
   gpu::GPUInfo gpu_info_;
   std::unique_ptr<MusGpuMemoryBufferManager> gpu_memory_buffer_manager_;
   GpuMain gpu_main_;
+  std::vector<mojo::StrongBindingPtr<mojom::GpuService>> clients_;
 
   DISALLOW_COPY_AND_ASSIGN(GpuServiceProxy);
 };