Revert "Delta encode pc descriptors."

runtime/vm/code_descriptors.cc

Index: runtime/vm/code_descriptors.cc
diff --git a/runtime/vm/code_descriptors.cc b/runtime/vm/code_descriptors.cc
index cc5ad3eec6ef0e2a751aa508e0b99ad8d7249e94..233d1b68032eb373578737b57a739b08f3fb3201 100644
--- a/runtime/vm/code_descriptors.cc
+++ b/runtime/vm/code_descriptors.cc
@@ -9,31 +9,38 @@ namespace dart {
 void DescriptorList::AddDescriptor(RawPcDescriptors::Kind kind,
                                    intptr_t pc_offset,
                                    intptr_t deopt_id,
-                                   intptr_t token_pos,
+                                   intptr_t token_index,
                                    intptr_t try_index) {
   ASSERT((kind == RawPcDescriptors::kRuntimeCall) ||
          (kind == RawPcDescriptors::kOther) ||
          (deopt_id != Isolate::kNoDeoptId));
-
-  PcDescriptors::EncodeInteger(&delta_encoded_data_,
-                               static_cast<intptr_t>(kind));
-  PcDescriptors::EncodeInteger(&delta_encoded_data_,
-                               try_index);
-  PcDescriptors::EncodeInteger(&delta_encoded_data_,
-                               pc_offset - prev_pc_offset);
-  PcDescriptors::EncodeInteger(&delta_encoded_data_,
-                               deopt_id - prev_deopt_id);
-  PcDescriptors::EncodeInteger(&delta_encoded_data_,
-                               token_pos - prev_token_pos);
-
-  prev_pc_offset = pc_offset;
-  prev_deopt_id = deopt_id;
-  prev_token_pos = token_pos;
+  struct PcDesc data;
+  data.pc_offset = pc_offset;
+  data.kind = kind;
+  data.deopt_id = deopt_id;
+  data.SetTokenPos(token_index);
+  data.try_index = try_index;
+  list_.Add(data);
+  if (try_index >= 0) {
+    has_try_index_ = true;
+  }
 }
 
 
 RawPcDescriptors* DescriptorList::FinalizePcDescriptors(uword entry_point) {
-  return PcDescriptors::New(&delta_encoded_data_);
+  intptr_t num_descriptors = Length();
+  const PcDescriptors& descriptors =
+      PcDescriptors::Handle(PcDescriptors::New(num_descriptors,
+                                               has_try_index_));
+  for (intptr_t i = 0; i < num_descriptors; i++) {
+    descriptors.AddDescriptor(i,
+                              PcOffset(i),
+                              Kind(i),
+                              DeoptId(i),
+                              TokenPos(i),
+                              TryIndex(i));
+  }
+  return descriptors.raw();
 }