Spec change: include covering expressions into Extract Local protocol.

pkg/analysis_server/tool/spec/spec_input.html

Index: pkg/analysis_server/tool/spec/spec_input.html
diff --git a/pkg/analysis_server/tool/spec/spec_input.html b/pkg/analysis_server/tool/spec/spec_input.html
index 06de8fff576dbd11d6bac9a0e1d997342cf4d93c..f9a40f9e9287d81edfd4455b2201be85e3dc92d8 100644
--- a/pkg/analysis_server/tool/spec/spec_input.html
+++ b/pkg/analysis_server/tool/spec/spec_input.html
@@ -4011,14 +4011,28 @@
       </refactoring>
       <refactoring kind="EXTRACT_LOCAL_VARIABLE">
         <p>
-          Create a local variable initialized by a specified
-          expression.
+          Create a local variable initialized by the expression that covers
+          the specified selection.
         </p>
         <p>
-          It is an error if the range contains anything other than a
-          complete expression (no partial expressions are allowed).
+          It is an error if the selection range is not covered by a
+          complete expression.
         </p>
         <feedback>
+          <field name="coveringExpressionOffsets">
+            <list><ref>int</ref></list>
+            <p>
+              The offsets of the expressions that cover the specified
+              selection, from the down most to the up most.
+            </p>
+          </field>
+          <field name="coveringExpressionLengths">
+            <list><ref>int</ref></list>
+            <p>
+              The lengths of the expressions that cover the specified
+              selection, from the down most to the up most.
+            </p>
+          </field>
           <field name="names">
             <list><ref>String</ref></list>
             <p>