DevTools: [JsDocValidator] Make sure function receivers agree with @this annotations

Source/devtools/scripts/jsdoc-validator/src/org/chromium/devtools/jsdoc/checks/AstUtil.java

Index: Source/devtools/scripts/jsdoc-validator/src/org/chromium/devtools/jsdoc/checks/AstUtil.java
diff --git a/Source/devtools/scripts/jsdoc-validator/src/org/chromium/devtools/jsdoc/checks/AstUtil.java b/Source/devtools/scripts/jsdoc-validator/src/org/chromium/devtools/jsdoc/checks/AstUtil.java
index e930753e756c595a39c5cb44173d26b6c2f51aff..e5c52ff4f98a076bfe7ee3ad45405462bcc4e778 100644
--- a/Source/devtools/scripts/jsdoc-validator/src/org/chromium/devtools/jsdoc/checks/AstUtil.java
+++ b/Source/devtools/scripts/jsdoc-validator/src/org/chromium/devtools/jsdoc/checks/AstUtil.java
@@ -7,6 +7,8 @@ import com.google.javascript.rhino.head.ast.Comment;
 import com.google.javascript.rhino.head.ast.FunctionNode;
 import com.google.javascript.rhino.head.ast.ObjectProperty;
 
+import org.chromium.devtools.jsdoc.ValidatorContext;
+
 public class AstUtil {
 
     private static final String PROTOTYPE_SUFFIX = ".prototype";
@@ -88,5 +90,10 @@ public class AstUtil {
         return null;
     }
 
+    static boolean hasThisAnnotation(FunctionNode node, ValidatorContext context) {
+        Comment comment = AstUtil.getJsDocNode(node);
+        return comment != null && context.getNodeText(comment).contains("@this");
+    }
+
     private AstUtil() {}
 }