convert //gpu to std::unique_ptr

gpu/vulkan/vulkan_command_pool.h

Index: gpu/vulkan/vulkan_command_pool.h
diff --git a/gpu/vulkan/vulkan_command_pool.h b/gpu/vulkan/vulkan_command_pool.h
index 5b763ef5801b222d63f06bfaf40d24f0ee7c0287..b54d5917c2eee5079c94e7275ef7e91f942808d5 100644
--- a/gpu/vulkan/vulkan_command_pool.h
+++ b/gpu/vulkan/vulkan_command_pool.h
@@ -7,8 +7,9 @@
 
 #include <vulkan/vulkan.h>
 
+#include <memory>
+
 #include "base/macros.h"
-#include "base/memory/scoped_ptr.h"
 
 namespace gpu {
 
@@ -23,8 +24,8 @@ class VulkanCommandPool {
   bool Initialize();
   void Destroy();
 
-  scoped_ptr<VulkanCommandBuffer> CreatePrimaryCommandBuffer();
-  scoped_ptr<VulkanCommandBuffer> CreateSecondaryCommandBuffer();
+  std::unique_ptr<VulkanCommandBuffer> CreatePrimaryCommandBuffer();
+  std::unique_ptr<VulkanCommandBuffer> CreateSecondaryCommandBuffer();
 
   VkCommandPool handle() { return handle_; }