Refactor rel32 searching process for x64 to make it more similar to x86.

courgette/rel32_finder_x86.h

Index: courgette/rel32_finder_x86.h
diff --git a/courgette/rel32_finder_x86.h b/courgette/rel32_finder_x86.h
new file mode 100644
index 0000000000000000000000000000000000000000..91b739bbd791c65ff6c9fc0cd4c605a5deee5a2e
--- /dev/null
+++ b/courgette/rel32_finder_x86.h
@@ -0,0 +1,33 @@
+// Copyright 2015 The Chromium Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style license that can be
+// found in the LICENSE file.
+
+#ifndef COURGETTE_REL32_FINDER_X86_H_
+#define COURGETTE_REL32_FINDER_X86_H_
+
+#include <stdint.h>
+
+#include <vector>
+
+#include "courgette/image_utils.h"
+#include "courgette/rel32_finder.h"
+
+namespace courgette {
+
+// This implementation performs naive scan for opcodes having rel32 as
+// arguments, disregarding instruction alignment.
+class Rel32FinderX86 : public Rel32Finder {
+ public:
+  Rel32FinderX86(RVA relocs_start_rva, RVA relocs_end_rva);
+  ~Rel32FinderX86() override = default;
+
+  void Find(const uint8_t* start_pointer,
+            const uint8_t* end_pointer,
+            RVA start_rva,
+            RVA end_rva,
+            const std::vector<RVA>& abs32_locations) override;
+};
+
+}  // namespace courgette
+
+#endif  // COURGETTE_REL32_FINDER_X86_H_