Migrate from deprecated method: ProjectTopics.X to ModuleListener.X (#7869)

#7718


https://github.com/JetBrains/intellij-community/blob/ab4c7fdf3cc2887d44d081681ec642843adfff6d/platform/projectModel-api/src/com/intellij/ProjectTopics.java#L12

Author: jwren

flutter-idea/src/io/flutter/FlutterInitializer.java

@@ -7,7 +7,6 @@
 
 import com.google.gson.JsonObject;
 import com.google.gson.JsonPrimitive;
-import com.intellij.ProjectTopics;
 import com.intellij.ide.plugins.PluginManagerCore;
 import com.intellij.ide.ui.UISettingsListener;
 import com.intellij.notification.*;
@@ -122,7 +121,7 @@ public void runActivity(@NotNull Project project) {
       initializeToolWindows(project);
     }
     else {
-      project.getMessageBus().connect().subscribe(ProjectTopics.MODULES, new ModuleListener() {
+      project.getMessageBus().connect().subscribe(ModuleListener.TOPIC, new ModuleListener() {
         @Override
         public void moduleAdded(@NotNull Project project, @NotNull Module module) {
           if (!toolWindowsInitialized && FlutterModuleUtils.isFlutterModule(module)) {

flutter-idea/src/io/flutter/project/ProjectWatch.java

@@ -5,7 +5,6 @@
  */
 package io.flutter.project;
 
-import com.intellij.ProjectTopics;
 import com.intellij.openapi.diagnostic.Logger;
 import com.intellij.openapi.project.Project;
 import com.intellij.openapi.project.ProjectManager;
@@ -44,7 +43,7 @@ public void projectClosed(@NotNull Project project) {
     manager.addProjectManagerListener(project, listener);
 
     final MessageBusConnection bus = project.getMessageBus().connect();
-    bus.subscribe(ProjectTopics.PROJECT_ROOTS, new ModuleRootListener() {
+    bus.subscribe(ModuleRootListener.TOPIC, new ModuleRootListener() {
       @Override
       public void rootsChanged(@NotNull ModuleRootEvent event) {
         fireEvent();

flutter-idea/src/io/flutter/sdk/FlutterPluginsLibraryManager.java

@@ -5,7 +5,6 @@
  */
 package io.flutter.sdk;
 
-import com.intellij.ProjectTopics;
 import com.intellij.openapi.application.ApplicationManager;
 import com.intellij.openapi.application.ModalityState;
 import com.intellij.openapi.project.DumbService;
@@ -51,7 +50,7 @@ protected void onBeforeFileChange(@NotNull VirtualFile file) {
       }
     }, getProject());
 
-    getProject().getMessageBus().connect().subscribe(ProjectTopics.PROJECT_ROOTS, new ModuleRootListener() {
+    getProject().getMessageBus().connect().subscribe(ModuleRootListener.TOPIC, new ModuleRootListener() {
       @Override
       public void rootsChanged(@NotNull ModuleRootEvent event) {
         scheduleUpdate();

flutter-studio/src/io/flutter/android/AndroidModuleLibraryManager.java

@@ -12,7 +12,6 @@
 
 import com.android.tools.idea.gradle.project.sync.GradleSyncInvoker;
 import com.android.tools.idea.gradle.project.sync.GradleSyncListener;
-import com.intellij.ProjectTopics;
 import com.intellij.facet.FacetManager;
 import com.intellij.notification.Notification;
 import com.intellij.notification.NotificationType;
@@ -27,7 +26,6 @@
 import com.intellij.openapi.progress.ProgressIndicator;
 import com.intellij.openapi.project.DumbService;
 import com.intellij.openapi.project.Project;
-//import com.intellij.openapi.project.impl.ProjectExImpl;
 import com.intellij.openapi.project.impl.ProjectImpl;
 import com.intellij.openapi.project.impl.ProjectManagerImpl;
 import com.intellij.openapi.projectRoots.Sdk;
@@ -280,7 +278,7 @@ protected void onBeforeFileChange(@NotNull VirtualFile file) {
         }
       }, project);
 
-      project.getMessageBus().connect().subscribe(ProjectTopics.PROJECT_ROOTS, new ModuleRootListener() {
+      project.getMessageBus().connect().subscribe(ModuleRootListener.TOPIC, new ModuleRootListener() {
         @Override
         public void rootsChanged(@NotNull ModuleRootEvent event) {
           manager.scheduleUpdate();

flutter-studio/src/io/flutter/utils/AddToAppUtils.java

@@ -13,7 +13,6 @@
 
 import com.android.tools.idea.gradle.project.sync.GradleSyncListener;
 import com.android.tools.idea.gradle.project.sync.GradleSyncState;
-import com.intellij.ProjectTopics;
 import com.intellij.debugger.engine.DebugProcess;
 import com.intellij.debugger.engine.DebugProcessListener;
 import com.intellij.debugger.impl.DebuggerManagerListener;
@@ -57,7 +56,7 @@ public static boolean initializeAndDetectFlutter(@NotNull Project project) {
     }
 
     if (!FlutterModuleUtils.hasFlutterModule(project)) {
-      connection.subscribe(ProjectTopics.MODULES, new ModuleListener() {
+      connection.subscribe(ModuleListener.TOPIC, new ModuleListener() {
         @Override
         public void moduleAdded(@NotNull Project proj, @NotNull Module mod) {
           if (AndroidUtils.FLUTTER_MODULE_NAME.equals(mod.getName()) ||