Deprecate ability to generate stubs via Compiler class.

src/compiler.cc

Index: src/compiler.cc
diff --git a/src/compiler.cc b/src/compiler.cc
index cf66a02856e9769d1fa827b510c6e4e61fd80003..691ec565a6ddb09fe8e7c4aabb2815f620b3aa88 100644
--- a/src/compiler.cc
+++ b/src/compiler.cc
@@ -178,7 +178,6 @@ CompilationInfo::CompilationInfo(ParseInfo* parse_info, CodeStub* code_stub,
       parameter_count_(0),
       optimization_id_(-1),
       osr_expr_stack_height_(0),
-      function_type_(nullptr),
       debug_name_(debug_name) {
   // Parameter count is number of stack parameters.
   if (code_stub_ != NULL) {
@@ -205,14 +204,6 @@ CompilationInfo::~CompilationInfo() {
 }
 
 
-void CompilationInfo::SetStub(CodeStub* code_stub) {
-  SetMode(STUB);
-  code_stub_ = code_stub;
-  debug_name_ = CodeStub::MajorName(code_stub->MajorKey());
-  set_output_code_kind(code_stub->GetCodeKind());
-}
-
-
 int CompilationInfo::num_parameters() const {
   return has_scope() ? scope()->num_parameters() : parameter_count_;
 }
@@ -998,23 +989,6 @@ MaybeHandle<Code> Compiler::GetLazyCode(Handle<JSFunction> function) {
 }
 
 
-MaybeHandle<Code> Compiler::GetStubCode(Handle<JSFunction> function,
-                                        CodeStub* stub) {
-  // Build a "hybrid" CompilationInfo for a JSFunction/CodeStub pair.
-  Zone zone;
-  ParseInfo parse_info(&zone, function);
-  CompilationInfo info(&parse_info);
-  info.SetFunctionType(stub->GetCallInterfaceDescriptor().GetFunctionType());
-  info.MarkAsFunctionContextSpecializing();
-  info.MarkAsDeoptimizationEnabled();
-  info.SetStub(stub);
-
-  // Run a "mini pipeline", extracted from compiler.cc.
-  if (!ParseAndAnalyze(&parse_info)) return MaybeHandle<Code>();
-  return compiler::Pipeline(&info).GenerateCode();
-}
-
-
 bool Compiler::Compile(Handle<JSFunction> function, ClearExceptionFlag flag) {
   if (function->is_compiled()) return true;
   MaybeHandle<Code> maybe_code = Compiler::GetLazyCode(function);