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diff --git a/gfx/angle/checkout/src/libANGLE/Compiler.h b/gfx/angle/checkout/src/libANGLE/Compiler.h
new file mode 100644
index 0000000000..c11b2cd4b4
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+++ b/gfx/angle/checkout/src/libANGLE/Compiler.h
@@ -0,0 +1,75 @@
+//
+// Copyright 2014 The ANGLE Project Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style license that can be
+// found in the LICENSE file.
+//
+
+// Compiler.h: Defines the gl::Compiler class, abstracting the ESSL compiler
+// that a GL context holds.
+
+#ifndef LIBANGLE_COMPILER_H_
+#define LIBANGLE_COMPILER_H_
+
+#include <vector>
+
+#include "GLSLANG/ShaderLang.h"
+#include "common/PackedEnums.h"
+#include "libANGLE/Error.h"
+#include "libANGLE/RefCountObject.h"
+
+namespace rx
+{
+class CompilerImpl;
+class GLImplFactory;
+}  // namespace rx
+
+namespace gl
+{
+class ShCompilerInstance;
+class State;
+
+class Compiler final : public RefCountObjectNoID
+{
+  public:
+    Compiler(rx::GLImplFactory *implFactory, const State &data, egl::Display *display);
+
+    void onDestroy(const Context *context) override;
+
+    ShCompilerInstance getInstance(ShaderType shaderType);
+    void putInstance(ShCompilerInstance &&instance);
+    ShShaderOutput getShaderOutputType() const { return mOutputType; }
+
+  private:
+    ~Compiler() override;
+    std::unique_ptr<rx::CompilerImpl> mImplementation;
+    ShShaderSpec mSpec;
+    ShShaderOutput mOutputType;
+    ShBuiltInResources mResources;
+    ShaderMap<std::vector<ShCompilerInstance>> mPools;
+};
+
+class ShCompilerInstance final : public angle::NonCopyable
+{
+  public:
+    ShCompilerInstance();
+    ShCompilerInstance(ShHandle handle, ShShaderOutput outputType, ShaderType shaderType);
+    ~ShCompilerInstance();
+    void destroy();
+
+    ShCompilerInstance(ShCompilerInstance &&other);
+    ShCompilerInstance &operator=(ShCompilerInstance &&other);
+
+    ShHandle getHandle();
+    ShaderType getShaderType() const;
+    const std::string &getBuiltinResourcesString();
+    ShShaderOutput getShaderOutputType() const;
+
+  private:
+    ShHandle mHandle;
+    ShShaderOutput mOutputType;
+    ShaderType mShaderType;
+};
+
+}  // namespace gl
+
+#endif  // LIBANGLE_COMPILER_H_