Devtools: expose scopes source location to debugger

src/debug/mirrors.js

Index: src/debug/mirrors.js
diff --git a/src/debug/mirrors.js b/src/debug/mirrors.js
index 8b9dd02b6ea0bd5cc029b3b16499df0b1fe948c7..787cc64649cb7ace1ba1b20bbe8ee5c9abe29362 100644
--- a/src/debug/mirrors.js
+++ b/src/debug/mirrors.js
@@ -2177,6 +2177,9 @@ FrameMirror.prototype.toText = function(opt_locals) {
 var kScopeDetailsTypeIndex = 0;
 var kScopeDetailsObjectIndex = 1;
 var kScopeDetailsNameIndex = 2;
+var kScopeDetailsStartPositionIndex = 3;
+var kScopeDetailsEndPositionIndex = 4;
+var kScopeDetailsFunctionIndex = 5;
 
 function ScopeDetails(frame, fun, index, opt_details) {
   if (frame) {
@@ -2221,6 +2224,29 @@ ScopeDetails.prototype.name = function() {
 };
 
 
+ScopeDetails.prototype.startPosition = function() {
+  if (!IS_UNDEFINED(this.break_id_)) {
+    %CheckExecutionState(this.break_id_);
+  }
+  return this.details_[kScopeDetailsStartPositionIndex];
+}
+
+
+ScopeDetails.prototype.endPosition = function() {
+  if (!IS_UNDEFINED(this.break_id_)) {
+    %CheckExecutionState(this.break_id_);
+  }
+  return this.details_[kScopeDetailsEndPositionIndex];
+}
+
+ScopeDetails.prototype.func = function() {
+  if (!IS_UNDEFINED(this.break_id_)) {
+    %CheckExecutionState(this.break_id_);
+  }
+  return this.details_[kScopeDetailsFunctionIndex];
+}
+
+
 ScopeDetails.prototype.setVariableValueImpl = function(name, new_value) {
   var raw_res;
   if (!IS_UNDEFINED(this.break_id_)) {