Reapply "Deoptimization support in inlined code."

runtime/vm/flow_graph_compiler.h

Index: runtime/vm/flow_graph_compiler.h
diff --git a/runtime/vm/flow_graph_compiler.h b/runtime/vm/flow_graph_compiler.h
index 4a8a5dd61c5b1d47e9c0d4b99129f3a376b54c5a..7b09544c6219518fd91d75a14c6d389bfcd3b8a0 100644
--- a/runtime/vm/flow_graph_compiler.h
+++ b/runtime/vm/flow_graph_compiler.h
@@ -70,6 +70,9 @@ class CompilerDeoptInfo : public ZoneAllocated {
 
   RawDeoptInfo* CreateDeoptInfo(FlowGraphCompiler* compiler);
 
+  void AllocateIncomingParametersRecursive(Environment* env,
+                                           intptr_t* stack_height);
+
   // No code needs to be generated.
   virtual void GenerateCode(FlowGraphCompiler* compiler, intptr_t stub_ix) {}
 
@@ -85,7 +88,7 @@ class CompilerDeoptInfo : public ZoneAllocated {
  private:
   const intptr_t deopt_id_;
   const DeoptReasonId reason_;
-  const Environment* deoptimization_env_;
+  Environment* deoptimization_env_;
 
   DISALLOW_COPY_AND_ASSIGN(CompilerDeoptInfo);
 };