Replace SmartPointer<T> with unique_ptr<T>

src/wasm/wasm-module.h

Index: src/wasm/wasm-module.h
diff --git a/src/wasm/wasm-module.h b/src/wasm/wasm-module.h
index 6bab4e6e725d6a05f2927a3f98a07921894480ea..8ff64fe1da70eb8276fc9ede6c6d076f9f2f9939 100644
--- a/src/wasm/wasm-module.h
+++ b/src/wasm/wasm-module.h
@@ -5,6 +5,8 @@
 #ifndef V8_WASM_MODULE_H_
 #define V8_WASM_MODULE_H_
 
+#include <memory>
+
 #include "src/api.h"
 #include "src/handles.h"
 #include "src/wasm/wasm-opcodes.h"
@@ -188,7 +190,7 @@ struct WasmModule {
   // invalid-semaphore error in the compilation tasks.
   // TODO(wasm): Move this semaphore back to CompileInParallel when the try bots
   // switch to libc-2.21 or higher.
-  base::SmartPointer<base::Semaphore> pending_tasks;
+  std::unique_ptr<base::Semaphore> pending_tasks;
 
   WasmModule() : WasmModule(nullptr) {}
   explicit WasmModule(byte* module_start);
@@ -243,6 +245,9 @@ struct WasmModule {
     DCHECK_LE(function_table.size(), UINT32_MAX);
     return static_cast<uint32_t>(function_table.size());
   }
+
+ private:
+  DISALLOW_COPY_AND_ASSIGN(WasmModule);
 };
 
 // An instantiated WASM module, including memory, function table, etc.