Clean some dex2oat options.

Remove dump-passes inherited from Quick days,
and move dump-timings and dump-stats to CompilerStats.

Test: test.py
Change-Id: Ie79be858a141e59dc0b2a87d8cb5a5248a5bc7af
diff --git a/compiler/optimizing/optimizing_compiler.cc b/compiler/optimizing/optimizing_compiler.cc
index 53f9ec4..47f7b12 100644
--- a/compiler/optimizing/optimizing_compiler.cc
+++ b/compiler/optimizing/optimizing_compiler.cc
@@ -112,7 +112,7 @@
                Mutex& dump_mutex)
       : graph_(graph),
         cached_method_name_(),
-        timing_logger_enabled_(compiler_driver->GetDumpPasses()),
+        timing_logger_enabled_(compiler_driver->GetCompilerOptions().GetDumpTimings()),
         timing_logger_(timing_logger_enabled_ ? GetMethodName() : "", true, true),
         disasm_info_(graph->GetAllocator()),
         visualizer_oss_(),
@@ -407,7 +407,7 @@
         driver->GetCompilerOptions().GetDumpCfgAppend() ? std::ofstream::app : std::ofstream::out;
     visualizer_output_.reset(new std::ofstream(cfg_file_name, cfg_file_mode));
   }
-  if (driver->GetDumpStats()) {
+  if (driver->GetCompilerOptions().GetDumpStats()) {
     compilation_stats_.reset(new OptimizingCompilerStats());
   }
 }