Add missing license headers

Source/Core/VideoBackends/D3D/PerfQuery.cpp

@@ -1,3 +1,7 @@
+// Copyright 2012 Dolphin Emulator Project
+// Licensed under GPLv2+
+// Refer to the license.txt file included.
+
 #include "VideoBackends/D3D/D3DBase.h"
 #include "VideoBackends/D3D/PerfQuery.h"
 #include "VideoCommon/RenderBase.h"

Source/Core/VideoBackends/D3D/PerfQuery.h

@@ -1,3 +1,7 @@
+// Copyright 2012 Dolphin Emulator Project
+// Licensed under GPLv2+
+// Refer to the license.txt file included.
+
 #pragma once
 
 #include <array>

Source/Core/VideoBackends/D3D/Render.h

@@ -1,3 +1,7 @@
+// Copyright 2010 Dolphin Emulator Project
+// Licensed under GPLv2+
+// Refer to the license.txt file included.
+
 #pragma once
 
 #include <string>

Source/Core/VideoBackends/D3D/VideoBackend.h

@@ -1,3 +1,7 @@
+// Copyright 2011 Dolphin Emulator Project
+// Licensed under GPLv2+
+// Refer to the license.txt file included.
+
 #pragma once
 
 #include <string>

Source/Core/VideoBackends/OGL/PerfQuery.h

@@ -1,3 +1,7 @@
+// Copyright 2012 Dolphin Emulator Project
+// Licensed under GPLv2+
+// Refer to the license.txt file included.
+
 #pragma once
 
 #include <array>

Source/Core/VideoBackends/OGL/Render.h

@@ -1,3 +1,7 @@
+// Copyright 2008 Dolphin Emulator Project
+// Licensed under GPLv2+
+// Refer to the license.txt file included.
+
 #pragma once
 
 #include <string>

Source/Core/VideoBackends/OGL/SamplerCache.h

@@ -1,3 +1,7 @@
+// Copyright 2013 Dolphin Emulator Project
+// Licensed under GPLv2+
+// Refer to the license.txt file included.
+
 #pragma once
 
 #include <map>

Source/Core/VideoBackends/OGL/VideoBackend.h

@@ -1,3 +1,7 @@
+// Copyright 2011 Dolphin Emulator Project
+// Licensed under GPLv2+
+// Refer to the license.txt file included.
+
 #pragma once
 
 #include <string>

Source/Core/VideoBackends/Software/VideoBackend.h

@@ -1,3 +1,7 @@
+// Copyright 2011 Dolphin Emulator Project
+// Licensed under GPLv2+
+// Refer to the license.txt file included.
+
 #pragma once
 
 #include <string>