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diff --git a/src/3rdparty/angle/src/compiler/translator/CallDAG.h b/src/3rdparty/angle/src/compiler/translator/CallDAG.h
deleted file mode 100644
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--- a/src/3rdparty/angle/src/compiler/translator/CallDAG.h
+++ /dev/null
@@ -1,79 +0,0 @@
-//
-// Copyright (c) 2002-2015 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.
-//
-
-// CallDAG.h: Defines a call graph DAG of functions to be re-used accross
-// analyses, allows to efficiently traverse the functions in topological
-// order.
-
-#ifndef COMPILER_TRANSLATOR_CALLDAG_H_
-#define COMPILER_TRANSLATOR_CALLDAG_H_
-
-#include <map>
-
-#include "compiler/translator/IntermNode.h"
-
-namespace sh
-{
-
-// The translator needs to analyze the the graph of the function calls
-// to run checks and analyses; since in GLSL recursion is not allowed
-// that graph is a DAG.
-// This class is used to precompute that function call DAG so that it
-// can be reused by multiple analyses.
-//
-// It stores a vector of function records, with one record per function.
-// Records are accessed by index but a function symbol id can be converted
-// to the index of the corresponding record. The records mostly contain the
-// AST node of the function and the indices of the function's callees.
-//
-// In addition, records are in reverse topological order: a function F being
-// called by a function G will have index index(F) < index(G), that way
-// depth-first analysis becomes analysis in the order of indices.
-
-class CallDAG : angle::NonCopyable
-{
-  public:
-    CallDAG();
-    ~CallDAG();
-
-    struct Record
-    {
-        std::string name;
-        TIntermFunctionDefinition *node;
-        std::vector<int> callees;
-    };
-
-    enum InitResult
-    {
-        INITDAG_SUCCESS,
-        INITDAG_RECURSION,
-        INITDAG_UNDEFINED,
-    };
-
-    // Returns INITDAG_SUCCESS if it was able to create the DAG, otherwise prints
-    // the initialization error in diagnostics, if present.
-    InitResult init(TIntermNode *root, TDiagnostics *diagnostics);
-
-    // Returns InvalidIndex if the function wasn't found
-    size_t findIndex(const TFunctionSymbolInfo *functionInfo) const;
-
-    const Record &getRecordFromIndex(size_t index) const;
-    const Record &getRecord(const TIntermAggregate *function) const;
-    size_t size() const;
-    void clear();
-
-    const static size_t InvalidIndex;
-
-  private:
-    std::vector<Record> mRecords;
-    std::map<int, int> mFunctionIdToIndex;
-
-    class CallDAGCreator;
-};
-
-}  // namespace sh
-
-#endif  // COMPILER_TRANSLATOR_CALLDAG_H_