Made "Remove Explicitly Specified Type" available on property type.

idea/src/org/jetbrains/jet/plugin/intentions/SpecifyTypeExplicitlyAction.java

@@ -56,6 +56,10 @@ public class SpecifyTypeExplicitlyAction extends PsiElementBaseIntentionAction {
 
     @Override
     public void invoke(@NotNull Project project, Editor editor, @NotNull PsiElement element) {
+        JetTypeReference typeRefParent = PsiTreeUtil.getTopmostParentOfType(element, JetTypeReference.class);
+        if (typeRefParent != null) {
+            element = typeRefParent;
+        }
         PsiElement parent = element.getParent();
         JetType type = getTypeForDeclaration((JetNamedDeclaration) parent);
         if (ErrorUtils.isErrorType(type)) {
@@ -91,6 +95,10 @@ public class SpecifyTypeExplicitlyAction extends PsiElementBaseIntentionAction {
 
     @Override
     public boolean isAvailable(@NotNull Project project, Editor editor, @NotNull PsiElement element) {
+        JetTypeReference typeRefParent = PsiTreeUtil.getTopmostParentOfType(element, JetTypeReference.class);
+        if (typeRefParent != null) {
+            element = typeRefParent;
+        }
         PsiElement parent = element.getParent();
         if (!(parent instanceof JetNamedDeclaration)) {
             return false;

idea/testData/intentions/specifyType/afterOnType.kt

+// "Remove Explicitly Specified Type" "true"
+import java.util.Map
+
+val x = null
\ No newline at end of file

idea/testData/intentions/specifyType/beforeOnType.kt

+// "Remove Explicitly Specified Type" "true"
+import java.util.Map
+
+val x : Map.Entry<Stri<caret>ng, Int>? = null
\ No newline at end of file

idea/tests/org/jetbrains/jet/plugin/intentions/SpecifyTypeExplicitlyTest.java

@@ -53,6 +53,10 @@ public class SpecifyTypeExplicitlyTest extends LightIntentionActionTestCase {
         doTest();
     }
 
+    public void testOnType() {
+        doTest();
+    }
+
     @Override
     protected String getTestDataPath() {
         return PluginTestCaseBase.getTestDataPathBase() + "/intentions/";