Add asserts to ensure that we:

src/arm/lithium-codegen-arm.cc

Index: src/arm/lithium-codegen-arm.cc
===================================================================
--- src/arm/lithium-codegen-arm.cc	(revision 9277)
+++ src/arm/lithium-codegen-arm.cc	(working copy)
@@ -82,6 +82,12 @@
   status_ = GENERATING;
   CpuFeatures::Scope scope1(VFP3);
   CpuFeatures::Scope scope2(ARMv7);
+
+  // Open a frame scope to indicate that there is a frame on the stack.  The
+  // NONE indicates that the scope shouldn't actually generate code to set up
+  // the frame (that is done in GeneatePrologue).
+  FrameScope frame_scope(masm_, StackFrame::NONE);
+
   return GeneratePrologue() &&
       GenerateBody() &&
       GenerateDeferredCode() &&