[optimizing] Rename HasArrayAccesses and check it

Since the flag is only used to see if there is a HBoundsCheck, rename
HasArrayAccesses() to HasBoundsChecks().

Add a check in graph_checker to see that the flag is set if we see a
HBoundsCheck instruction.

Change-Id: I10fe92897374fb247082152dd75c3611cc40ff30
Signed-off-by: Mark Mendell <mark.p.mendell@intel.com>
diff --git a/compiler/optimizing/graph_checker.h b/compiler/optimizing/graph_checker.h
index 45e8804..b4314da 100644
--- a/compiler/optimizing/graph_checker.h
+++ b/compiler/optimizing/graph_checker.h
@@ -45,6 +45,9 @@
   // Perform control-flow graph checks on instruction.
   void VisitInvokeStaticOrDirect(HInvokeStaticOrDirect* invoke) OVERRIDE;
 
+  // Check that the HasBoundsChecks() flag is set for bounds checks.
+  void VisitBoundsCheck(HBoundsCheck* check) OVERRIDE;
+
   // Was the last visit of the graph valid?
   bool IsValid() const {
     return errors_.empty();