Revert 8122 (stub call asserts) while test failures are investigated.

src/code-stubs.cc

Index: src/code-stubs.cc
===================================================================
--- src/code-stubs.cc	(revision 8124)
+++ src/code-stubs.cc	(working copy)
@@ -52,12 +52,11 @@
   // Update the static counter each time a new code stub is generated.
   masm->isolate()->counters()->code_stubs()->Increment();
 
-  // Nested stubs are not allowed for leaves.
-  AllowStubCallsScope allow_scope(masm, false);
+  // Nested stubs are not allowed for leafs.
+  AllowStubCallsScope allow_scope(masm, AllowsStubCalls());
 
   // Generate the code for the stub.
   masm->set_generating_stub(true);
-  NoCurrentFrameScope scope(masm);
   Generate(masm);
 }