Server-side workaround to handle overlapping modules.

src/processor/fast_source_line_resolver_unittest.cc

 // Copyright (c) 2010 Google Inc.
 // All rights reserved.
 //
 // Redistribution and use in source and binary forms, with or without
 // modification, are permitted provided that the following conditions are
 // met:
 //
 //     * Redistributions of source code must retain the above copyright
 // notice, this list of conditions and the following disclaimer.
 //     * Redistributions in binary form must reproduce the above
@@ skipping 61 matching lines @@
   explicit TestCodeModule(string code_file) : code_file_(code_file) {}
   virtual ~TestCodeModule() {}
 
   virtual uint64_t base_address() const { return 0; }
   virtual uint64_t size() const { return 0xb000; }
   virtual string code_file() const { return code_file_; }
   virtual string code_identifier() const { return ""; }
   virtual string debug_file() const { return ""; }
   virtual string debug_identifier() const { return ""; }
   virtual string version() const { return ""; }
-  virtual const CodeModule* Copy() const {
+  virtual CodeModule* Copy() const {
     return new TestCodeModule(code_file_);
   }
+  virtual uint64_t shrink_down_delta() const { return 0; }
+  virtual void SetShrinkDownDelta(uint64_t shrink_down_delta) {}
 
  private:
   string code_file_;
 };
 
 // A mock memory region object, for use by the STACK CFI tests.
 class MockMemoryRegion: public MemoryRegion {
   uint64_t GetBase() const { return 0x10000; }
   uint32_t GetSize() const { return 0x01000; }
   bool GetMemoryAtAddress(uint64_t address, uint8_t *value) const {
@@ skipping 385 matching lines @@
     ASSERT_TRUE(module_comparer.Compare(symbol_data_string));
   }
 }
 
 }  // namespace
 
 int main(int argc, char *argv[]) {
   ::testing::InitGoogleTest(&argc, argv);
   return RUN_ALL_TESTS();
 }