Create SyntheticMemberDescriptor interface

Implement this interface by sam adapters/constructors and use it in navigation

 #KT-11708 Fixed

idea/idea-completion/src/org/jetbrains/kotlin/idea/completion/LookupElementFactory.kt

@@ -1,5 +1,5 @@
 /*
- * Copyright 2010-2015 JetBrains s.r.o.
+ * Copyright 2010-2016 JetBrains s.r.o.
  *
  * Licensed under the Apache License, Version 2.0 (the "License");
  * you may not use this file except in compliance with the License.
@@ -305,7 +305,7 @@ class LookupElementFactory(
             return callableWeight(descriptor.getMethod)
         }
         if (descriptor is SamAdapterExtensionFunctionDescriptor) {
-            return callableWeight(descriptor.sourceFunction)
+            return callableWeight(descriptor.baseDescriptorForSynthetic)
         }
 
         if (descriptor.overriddenDescriptors.isNotEmpty()) {

idea/idea-core/src/org/jetbrains/kotlin/idea/core/KotlinIndicesHelper.kt

@@ -1,5 +1,5 @@
 /*
- * Copyright 2010-2015 JetBrains s.r.o.
+ * Copyright 2010-2016 JetBrains s.r.o.
  *
  * Licensed under the Apache License, Version 2.0 (the "License");
  * you may not use this file except in compliance with the License.
@@ -288,7 +288,7 @@ class KotlinIndicesHelper(
                     // SAM-adapter
                     container.staticScope.getContributedFunctions(descriptor.name, NoLookupLocation.FROM_IDE)
                             .filterIsInstance<SamAdapterDescriptor<*>>()
-                            .firstOrNull { it.originForSam.original == descriptor.original }
+                            .firstOrNull { it.baseDescriptorForSynthetic.original == descriptor.original }
                             ?.let { processor(it) }
                 }
             }

idea/testData/resolve/referenceWithLib/overridingFunctionWithSamAdapter.kt

@@ -0,0 +1,13 @@
+package test
+
+class MyClass: Test() {
+
+}
+
+fun test(m: MyClass) {
+    m.ac<caret>t {
+
+    }
+}
+
+// REF: (in test.Test).act(Action)

idea/testData/resolve/referenceWithLib/overridingFunctionWithSamAdapterSrc/Test.java

@@ -0,0 +1,10 @@
+package test;
+
+public class Test {
+    public interface Action {
+        String doSmth(String other);
+    }
+
+    void act(Action action) {
+    }
+}

idea/tests/org/jetbrains/kotlin/idea/resolve/ReferenceResolveWithLibTestGenerated.java

@@ -77,6 +77,12 @@ public class ReferenceResolveWithLibTestGenerated extends AbstractReferenceResol
         doTest(fileName);
     }
 
+    @TestMetadata("overridingFunctionWithSamAdapter.kt")
+    public void testOverridingFunctionWithSamAdapter() throws Exception {
+        String fileName = KotlinTestUtils.navigationMetadata("idea/testData/resolve/referenceWithLib/overridingFunctionWithSamAdapter.kt");
+        doTest(fileName);
+    }
+
     @TestMetadata("packageOfLibDeclaration.kt")
     public void testPackageOfLibDeclaration() throws Exception {
         String fileName = KotlinTestUtils.navigationMetadata("idea/testData/resolve/referenceWithLib/packageOfLibDeclaration.kt");