Revert "Lazy deopt without code patching."

runtime/vm/instructions_dbc.cc

Index: runtime/vm/instructions_dbc.cc
diff --git a/runtime/vm/instructions_dbc.cc b/runtime/vm/instructions_dbc.cc
index b3f50ad49e20e7877e7491ba759414a649b6bd59..7d8dab7bc30697e0a64a90149cea64f3d6a2d84d 100644
--- a/runtime/vm/instructions_dbc.cc
+++ b/runtime/vm/instructions_dbc.cc
@@ -67,6 +67,18 @@ CallPattern::CallPattern(uword pc, const Code& code)
 }
 
 
+int CallPattern::DeoptCallPatternLengthInInstructions() {
+  UNIMPLEMENTED();
+  return 0;
+}
+
+
+int CallPattern::DeoptCallPatternLengthInBytes() {
+  UNIMPLEMENTED();
+  return 0;
+}
+
+
 NativeCallPattern::NativeCallPattern(uword pc, const Code& code)
     : object_pool_(ObjectPool::Handle(code.GetObjectPool())),
       end_(pc),
@@ -169,7 +181,7 @@ void CallPattern::SetTargetCode(const Code& target_code) const {
 }
 
 
-void CallPattern::InsertDeoptCallAt(uword pc) {
+void CallPattern::InsertDeoptCallAt(uword pc, uword target_address) {
   const uint8_t argc = Bytecode::IsCallOpcode(Bytecode::At(pc)) ?
       Bytecode::DecodeArgc(Bytecode::At(pc)) : 0;
   *reinterpret_cast<Instr*>(pc) = Bytecode::Encode(Bytecode::kDeopt, argc, 0);