Add asserts to ensure that we:

src/ia32/deoptimizer-ia32.cc

Index: src/ia32/deoptimizer-ia32.cc
===================================================================
--- src/ia32/deoptimizer-ia32.cc	(revision 9277)
+++ src/ia32/deoptimizer-ia32.cc	(working copy)
@@ -675,7 +675,10 @@
   __ mov(Operand(esp, 4 * kPointerSize), edx);  // Fp-to-sp delta.
   __ mov(Operand(esp, 5 * kPointerSize),
          Immediate(ExternalReference::isolate_address()));
-  __ CallCFunction(ExternalReference::new_deoptimizer_function(isolate), 6);
+  {
+    AllowExternalCallThatCantCauseGC scope(masm());
+    __ CallCFunction(ExternalReference::new_deoptimizer_function(isolate), 6);
+  }
 
   // Preserve deoptimizer object in register eax and get the input
   // frame descriptor pointer.
@@ -723,8 +726,11 @@
   __ push(eax);
   __ PrepareCallCFunction(1, ebx);
   __ mov(Operand(esp, 0 * kPointerSize), eax);
-  __ CallCFunction(
-      ExternalReference::compute_output_frames_function(isolate), 1);
+  {
+    AllowExternalCallThatCantCauseGC scope(masm());
+    __ CallCFunction(
+        ExternalReference::compute_output_frames_function(isolate), 1);
+  }
   __ pop(eax);
 
   // Replace the current frame with the output frames.