[turbofan] Factor out the function specific part from the frame state operator.

src/compiler/instruction-selector.cc

Index: src/compiler/instruction-selector.cc
diff --git a/src/compiler/instruction-selector.cc b/src/compiler/instruction-selector.cc
index 3ea316fd95f0525421440e71ca533543b2c13646..e7ca5e2532c531d48de6fc9309edc283c6c72fb5 100644
--- a/src/compiler/instruction-selector.cc
+++ b/src/compiler/instruction-selector.cc
@@ -1037,7 +1037,7 @@ FrameStateDescriptor* InstructionSelector::GetFrameStateDescriptor(
     Node* state) {
   DCHECK(state->opcode() == IrOpcode::kFrameState);
   DCHECK_EQ(kFrameStateInputCount, state->InputCount());
-  FrameStateCallInfo state_info = OpParameter<FrameStateCallInfo>(state);
+  FrameStateInfo state_info = OpParameter<FrameStateInfo>(state);
 
   int parameters = static_cast<int>(
       StateValuesAccess(state->InputAt(kFrameStateParametersInput)).size());
@@ -1046,6 +1046,9 @@ FrameStateDescriptor* InstructionSelector::GetFrameStateDescriptor(
   int stack = static_cast<int>(
       StateValuesAccess(state->InputAt(kFrameStateStackInput)).size());
 
+  DCHECK_EQ(parameters, state_info.parameter_count());
+  DCHECK_EQ(locals, state_info.local_count());
+
   FrameStateDescriptor* outer_state = NULL;
   Node* outer_node = state->InputAt(kFrameStateOuterStateInput);
   if (outer_node->opcode() == IrOpcode::kFrameState) {