Add trampoline symbols to native debug info.

The debugger needs them to unwind through the trampolines and to
understand what is happening in the call stack.

Change-Id: Ia554058c3796788adcd7336d620a7734eb366905
diff --git a/compiler/oat_writer.cc b/compiler/oat_writer.cc
index 2b511fc..c2f19c9 100644
--- a/compiler/oat_writer.cc
+++ b/compiler/oat_writer.cc
@@ -811,7 +811,8 @@
       if (compiler_options.GenerateAnyDebugInfo() && code_size != 0) {
         bool has_code_info = method_header->IsOptimized();
         // Record debug information for this function if we are doing that.
-        debug::MethodDebugInfo info;
+        debug::MethodDebugInfo info = debug::MethodDebugInfo();
+        info.trampoline_name = nullptr;
         info.dex_file = dex_file_;
         info.class_def_index = class_def_index_;
         info.dex_method_index = it.GetMemberIndex();