Simplify the desugaring of catch clauses.

runtime/vm/scopes.cc

 // Copyright (c) 2012, the Dart project authors.  Please see the AUTHORS file
 // for details. All rights reserved. Use of this source code is governed by a
 // BSD-style license that can be found in the LICENSE file.
 
 #include "vm/scopes.h"
 
 #include "vm/object.h"
 #include "vm/stack_frame.h"
 #include "vm/symbols.h"
 
@@ skipping 421 matching lines @@
               (label->kind() == SourceLabel::kSwitch))) {
         return label;
       }
     }
     current_scope = current_scope->parent();
   }
   return NULL;
 }
 
 
-SourceLabel* LocalScope::LookupInnermostCatchLabel() {
-  LocalScope* current_scope = this;
-  while (current_scope != NULL) {
-    for (intptr_t i = 0; i < current_scope->labels_.length(); i++) {
-      SourceLabel* label = current_scope->labels_[i];
-      if (label->kind() == SourceLabel::kCatch) {
-        return label;
-      }
-    }
-    current_scope = current_scope->parent();
-  }
-  return NULL;
-}
-
-
 LocalScope* LocalScope::LookupSwitchScope() {
   LocalScope* current_scope = this->parent();
   int this_level = this->function_level();
   while (current_scope != NULL &&
          current_scope->function_level() == this_level) {
     for (int i = 0; i < current_scope->labels_.length(); i++) {
       SourceLabel* label = current_scope->labels_[i];
       if (label->kind() == SourceLabel::kSwitch) {
         // This scope contains a label that is bound to a switch statement,
         // so it is the scope of the a statement body.
@@ skipping 173 matching lines @@
     return fixed_parameter_count - (index() - kParamEndSlotFromFp);
   } else {
     // Shift negative indexes so that the lowest one is 0 (they are still
     // non-positive).
     return fixed_parameter_count - (index() - kFirstLocalSlotFromFp);
   }
 }
 
 
 }  // namespace dart