Server-side workaround to handle overlapping modules.

src/processor/fast_source_line_resolver_unittest.cc

Index: src/processor/fast_source_line_resolver_unittest.cc
diff --git a/src/processor/fast_source_line_resolver_unittest.cc b/src/processor/fast_source_line_resolver_unittest.cc
index 72632f84f92069a87e6b48b3565434224b3a340f..c7215228e94c89e0b06cb60ce8600bf16aebd6cb 100644
--- a/src/processor/fast_source_line_resolver_unittest.cc
+++ b/src/processor/fast_source_line_resolver_unittest.cc
@@ -79,9 +79,11 @@ class TestCodeModule : public CodeModule {
   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_;