convert //gpu to std::unique_ptr

gpu/vulkan/vulkan_device_queue.h

Index: gpu/vulkan/vulkan_device_queue.h
diff --git a/gpu/vulkan/vulkan_device_queue.h b/gpu/vulkan/vulkan_device_queue.h
index 59d3e96039fe78f7f164f3abf2ab87d5a282c325..ecb1724b4dd8e3ff810f38f10e77b8ceb0436802 100644
--- a/gpu/vulkan/vulkan_device_queue.h
+++ b/gpu/vulkan/vulkan_device_queue.h
@@ -7,9 +7,10 @@
 
 #include <vulkan/vulkan.h>
 
+#include <memory>
+
 #include "base/logging.h"
 #include "base/macros.h"
-#include "base/memory/scoped_ptr.h"
 #include "gpu/vulkan/vulkan_export.h"
 
 namespace gpu {
@@ -47,7 +48,7 @@ class VULKAN_EXPORT VulkanDeviceQueue {
 
   uint32_t GetVulkanQueueIndex() const { return vk_queue_index_; }
 
-  scoped_ptr<gpu::VulkanCommandPool> CreateCommandPool();
+  std::unique_ptr<gpu::VulkanCommandPool> CreateCommandPool();
 
  private:
   VkPhysicalDevice vk_physical_device_ = VK_NULL_HANDLE;