Disable osr while investigating flakiness.

org.apache.harmony.tests.java.util.TreeMapRndTest#testPutAll fails
in debug mode.

Change-Id: Idd15b25a236d4e5d3eb6d83ac0c038c1e10ee55a
diff --git a/runtime/jit/jit.cc b/runtime/jit/jit.cc
index 54b65e6..e38a684 100644
--- a/runtime/jit/jit.cc
+++ b/runtime/jit/jit.cc
@@ -36,6 +36,8 @@
 namespace art {
 namespace jit {
 
+static constexpr bool kEnableOnStackReplacement = false;
+
 JitOptions* JitOptions::CreateFromRuntimeArguments(const RuntimeArgumentMap& options) {
   auto* jit_options = new JitOptions;
   jit_options->use_jit_ = options.GetOrDefault(RuntimeArgumentMap::UseJIT);
@@ -274,6 +276,10 @@
                                     uint32_t dex_pc,
                                     int32_t dex_pc_offset,
                                     JValue* result) {
+  if (!kEnableOnStackReplacement) {
+    return false;
+  }
+
   Jit* jit = Runtime::Current()->GetJit();
   if (jit == nullptr) {
     return false;