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diff --git a/gfx/angle/checkout/src/libANGLE/MemoryProgramCache.h b/gfx/angle/checkout/src/libANGLE/MemoryProgramCache.h
new file mode 100644
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+++ b/gfx/angle/checkout/src/libANGLE/MemoryProgramCache.h
@@ -0,0 +1,91 @@
+//
+// Copyright 2017-2018 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.
+//
+// MemoryProgramCache: Stores compiled and linked programs in memory so they don't
+//   always have to be re-compiled. Can be used in conjunction with the platform
+//   layer to warm up the cache from disk.
+
+#ifndef LIBANGLE_MEMORY_PROGRAM_CACHE_H_
+#define LIBANGLE_MEMORY_PROGRAM_CACHE_H_
+
+#include <array>
+
+#include "common/MemoryBuffer.h"
+#include "libANGLE/BlobCache.h"
+#include "libANGLE/Error.h"
+
+namespace gl
+{
+class Context;
+class Program;
+class ProgramState;
+
+class MemoryProgramCache final : angle::NonCopyable
+{
+  public:
+    explicit MemoryProgramCache(egl::BlobCache &blobCache);
+    ~MemoryProgramCache();
+
+    static void ComputeHash(const Context *context,
+                            const Program *program,
+                            egl::BlobCache::Key *hashOut);
+
+    // Check if the cache contains a binary matching the specified program.
+    bool get(const Context *context,
+             const egl::BlobCache::Key &programHash,
+             egl::BlobCache::Value *programOut);
+
+    // For querying the contents of the cache.
+    bool getAt(size_t index,
+               const egl::BlobCache::Key **hashOut,
+               egl::BlobCache::Value *programOut);
+
+    // Evict a program from the binary cache.
+    void remove(const egl::BlobCache::Key &programHash);
+
+    // Helper method that serializes a program.
+    void putProgram(const egl::BlobCache::Key &programHash,
+                    const Context *context,
+                    const Program *program);
+
+    // Same as putProgram but computes the hash.
+    void updateProgram(const Context *context, const Program *program);
+
+    // Store a binary directly.  TODO(syoussefi): deprecated.  Will be removed once Chrome supports
+    // EGL_ANDROID_blob_cache. http://anglebug.com/2516
+    void putBinary(const egl::BlobCache::Key &programHash, const uint8_t *binary, size_t length);
+
+    // Check the cache, and deserialize and load the program if found. Evict existing hash if load
+    // fails.
+    angle::Result getProgram(const Context *context,
+                             Program *program,
+                             egl::BlobCache::Key *hashOut);
+
+    // Empty the cache.
+    void clear();
+
+    // Resize the cache. Discards current contents.
+    void resize(size_t maxCacheSizeBytes);
+
+    // Returns the number of entries in the cache.
+    size_t entryCount() const;
+
+    // Reduces the current cache size and returns the number of bytes freed.
+    size_t trim(size_t limit);
+
+    // Returns the current cache size in bytes.
+    size_t size() const;
+
+    // Returns the maximum cache size in bytes.
+    size_t maxSize() const;
+
+  private:
+    egl::BlobCache &mBlobCache;
+    unsigned int mIssuedWarnings;
+};
+
+}  // namespace gl
+
+#endif  // LIBANGLE_MEMORY_PROGRAM_CACHE_H_