ART: Curb dex2oat verbosity

Only print dedupe collisions in a debug build or on verbose logging.

Change-Id: I08bd04a453d95b6dba6cf6955b5741cd97daf480
diff --git a/compiler/driver/compiler_driver.h b/compiler/driver/compiler_driver.h
index 11b4329..a86043c 100644
--- a/compiler/driver/compiler_driver.h
+++ b/compiler/driver/compiler_driver.h
@@ -400,7 +400,7 @@
   bool SkipCompilation(const std::string& method_name);
 
   // Get memory usage during compilation.
-  std::string GetMemoryUsageString() const;
+  std::string GetMemoryUsageString(bool extended) const;
 
  private:
   // These flags are internal to CompilerDriver for collecting INVOKE resolution statistics.