Add **GPU Memory profiler** to Editor

Source/Engine/Content/Loading/ContentLoadTask.h

@@ -3,7 +3,6 @@
 #pragma once
 
 #include "Engine/Threading/Task.h"
-#include "Engine/Core/Types/String.h"
 
 class Asset;
 class LoadingThread;
@@ -46,7 +45,6 @@ public:
     /// <summary>
     /// Gets a task type.
     /// </summary>
-    /// <returns>The type.</returns>
     FORCE_INLINE Type GetType() const
     {
         return _type;
@@ -68,13 +66,7 @@ protected:
 
 public:
     // [Task]
-    String ToString() const override
-    {
-        return String::Format(TEXT("Content Load Task {0} ({1})"),
-                              ToString(GetType()),
-                              ::ToString(GetState())
-        );
-    }
+    String ToString() const override;
 
 protected:
     // [Task]

Source/Engine/Content/Loading/ContentLoadingManager.cpp

@@ -211,6 +211,11 @@ void ContentLoadingManagerService::Dispose()
     Tasks.CancelAll();
 }
 
+String ContentLoadTask::ToString() const
+{
+    return String::Format(TEXT("Content Load Task {0} ({1})"), ToString(GetType()), (int32)GetState());
+}
+
 void ContentLoadTask::Enqueue()
 {
     Tasks.Add(this);