Move instruction_set_ to CompilerOptions.

Removes CompilerDriver dependency from ImageWriter and
several other classes.

Test: m test-art-host-gtest
Test: testrunner.py --host --optimizing
Test: Pixel 2 XL boots.
Test: m test-art-target-gtest
Test: testrunner.py --target --optimizing
Change-Id: I3c5b8ff73732128b9c4fad9405231a216ea72465
diff --git a/compiler/optimizing/scheduler_test.cc b/compiler/optimizing/scheduler_test.cc
index d4cae72..7079e07 100644
--- a/compiler/optimizing/scheduler_test.cc
+++ b/compiler/optimizing/scheduler_test.cc
@@ -192,7 +192,9 @@
       HInstructionScheduling scheduling(graph, target_config.GetInstructionSet());
       scheduling.Run(/*only_optimize_loop_blocks*/ false, /*schedule_randomly*/ true);
 
+      OverrideInstructionSetFeatures(target_config.GetInstructionSet(), "default");
       RunCode(target_config,
+              *compiler_options_,
               graph,
               [](HGraph* graph_arg) { RemoveSuspendChecks(graph_arg); },
               has_result, expected);