More debugger support.

This wires up method-entry events and fixes a bug in exception events.

Change-Id: Ia7c46786a8073434fbb4546615072622f301ef84
diff --git a/src/utils.h b/src/utils.h
index 39a5d4f..e774a3b 100644
--- a/src/utils.h
+++ b/src/utils.h
@@ -218,6 +218,9 @@
 // Turn "Ljava/lang/String;" into "java.lang.String".
 std::string DescriptorToDot(const char* descriptor);
 
+// Turn "Ljava/lang/String;" into "java/lang/String".
+std::string DescriptorToName(const char* descriptor);
+
 // Tests for whether 's' is a valid class name in the three common forms:
 bool IsValidBinaryClassName(const char* s);  // "java.lang.String"
 bool IsValidJniClassName(const char* s);     // "java/lang/String"