Unused symbol: do not report for @JsName annotated declarations

#KT-17368 Fixed

idea/src/org/jetbrains/kotlin/idea/inspections/UnusedSymbolInspection.kt

@@ -98,7 +98,7 @@ class UnusedSymbolInspection : AbstractKotlinInspection() {
 
         private val javaInspection = UnusedDeclarationInspection()
 
-        private val KOTLIN_ADDITIONAL_ANNOTATIONS = listOf("kotlin.test.*")
+        private val KOTLIN_ADDITIONAL_ANNOTATIONS = listOf("kotlin.test.*", "kotlin.js.JsName")
 
         private val KOTLIN_BUILTIN_ENUM_FUNCTIONS = listOf(FqName("kotlin.enumValues"), FqName("kotlin.enumValueOf"))
 

idea/testData/inspectionsLocal/unusedSymbol/jsName.kt

@@ -0,0 +1,12 @@
+// PROBLEM: none
+// JS
+class Person(val name: String) {
+    fun hello() {
+        println("Hello $name!")
+    }
+
+    @JsName("helloWithGreeting")
+    fun <caret>hello(greeting: String) {
+        println("$greeting $name!")
+    }
+}

idea/tests/org/jetbrains/kotlin/idea/inspections/LocalInspectionTestGenerated.java

@@ -13521,6 +13521,11 @@ public class LocalInspectionTestGenerated extends AbstractLocalInspectionTest {
             runTest("idea/testData/inspectionsLocal/unusedSymbol/internal.kt");
         }
 
+        @TestMetadata("jsName.kt")
+        public void testJsName() throws Exception {
+            runTest("idea/testData/inspectionsLocal/unusedSymbol/jsName.kt");
+        }
+
         @TestMetadata("propertyOfInlineClassType.kt")
         public void testPropertyOfInlineClassType() throws Exception {
             runTest("idea/testData/inspectionsLocal/unusedSymbol/propertyOfInlineClassType.kt");