ART: Disable Math.round intrinsics

The move to OpenJDK means that Android has caught up with the
definition change of Math.round. Disable intrinsics.

Bug: 26327751
Change-Id: I00dc6cfca12bd7c95e56a4ab76ffee707d3822dc
diff --git a/compiler/optimizing/intrinsics.h b/compiler/optimizing/intrinsics.h
index e459516..a6db1e8 100644
--- a/compiler/optimizing/intrinsics.h
+++ b/compiler/optimizing/intrinsics.h
@@ -27,6 +27,9 @@
 class CompilerDriver;
 class DexFile;
 
+// Temporary measure until we have caught up with the Java 7 definition of Math.round. b/26327751
+static constexpr bool kRoundIsPlusPointFive = false;
+
 // Recognize intrinsics from HInvoke nodes.
 class IntrinsicsRecognizer : public HOptimization {
  public: