Migrate off of ServiceManager.getService(..)

https://github.com/JetBrains/intellij-community/blob/768c7392257e8fbedcc1aa4c738fa523b89fa0e6/platform/core-api/src/com/intellij/openapi/components/ServiceManager.java#L19

This is progress on flutter#7718

Author: jwren

Diff for: flutter-idea/src/io/flutter/FlutterUtils.java

@@ -550,7 +550,12 @@ public static EmbeddedBrowser embeddedBrowser(Project project) {
       return null;
     }
 
-    return FlutterSettings.getInstance().isEnableJcefBrowser()
+    FlutterSettings settings = FlutterSettings.getInstance();
+    if (settings == null) {
+      return null;
+    }
+
+    return settings.isEnableJcefBrowser()
            ? EmbeddedJcefBrowser.getInstance(project)
            : EmbeddedJxBrowser.getInstance(project);
   }

Diff for: flutter-idea/src/io/flutter/jxbrowser/EmbeddedBrowserEngine.java

@@ -25,7 +25,7 @@ public class EmbeddedBrowserEngine {
   private final Engine engine;
 
   public static EmbeddedBrowserEngine getInstance() {
-    return ServiceManager.getService(EmbeddedBrowserEngine.class);
+    return ApplicationManager.getApplication().getService(EmbeddedBrowserEngine.class);
   }
 
   public EmbeddedBrowserEngine() {

Diff for: flutter-idea/src/io/flutter/module/settings/SettingsHelpForm.java

@@ -6,7 +6,6 @@
 package io.flutter.module.settings;
 
 import com.intellij.ide.browsers.BrowserLauncher;
-import com.intellij.openapi.components.ServiceManager;
 import com.intellij.ui.components.labels.LinkLabel;
 import io.flutter.FlutterBundle;
 import io.flutter.FlutterConstants;
@@ -36,10 +35,6 @@ public class SettingsHelpForm {
   @SuppressWarnings("rawtypes")
   private LinkLabel gettingStartedUrl;
 
-  public static SettingsHelpForm getInstance() {
-    return ServiceManager.getService(SettingsHelpForm.class);
-  }
-
   public SettingsHelpForm() {
     projectTypeLabel.setText(FlutterBundle.message("flutter.module.create.settings.help.project_type.label"));
     projectTypeDescriptionForApp.setText(FlutterBundle.message("flutter.module.create.settings.help.project_type.description.app"));

Diff for: flutter-idea/src/io/flutter/settings/FlutterSettings.java

@@ -7,12 +7,14 @@
 
 import com.google.common.annotations.VisibleForTesting;
 import com.intellij.ide.util.PropertiesComponent;
+import com.intellij.openapi.application.ApplicationManager;
 import com.intellij.openapi.components.ServiceManager;
 import com.intellij.openapi.util.registry.Registry;
 import com.intellij.util.EventDispatcher;
 import com.jetbrains.lang.dart.analyzer.DartClosingLabelManager;
 
 import java.util.EventListener;
+import java.util.Objects;
 
 public class FlutterSettings {
   private static final String reloadOnSaveKey = "io.flutter.reloadOnSave";
@@ -62,7 +64,7 @@ public static FlutterSettings getInstance() {
       return testInstance;
     }
 
-    return ServiceManager.getService(FlutterSettings.class);
+    return Objects.requireNonNull(ApplicationManager.getApplication()).getService(FlutterSettings.class);
   }
 
   protected static PropertiesComponent getPropertiesComponent() {

Diff for: flutter-idea/src/io/flutter/view/EmbeddedJcefBrowser.java

@@ -15,6 +15,7 @@
 
 import javax.swing.*;
 import java.awt.Dimension;
+import java.util.Objects;
 
 class EmbeddedJcefBrowserTab implements EmbeddedTab {
   private JBCefBrowser browser;
@@ -48,8 +49,8 @@ public EmbeddedJcefBrowser(Project project) {
   }
 
   @NotNull
-  public static EmbeddedJcefBrowser getInstance(Project project) {
-    return ServiceManager.getService(project, EmbeddedJcefBrowser.class);
+  public static EmbeddedJcefBrowser getInstance(@NotNull Project project) {
+    return Objects.requireNonNull(project.getService(EmbeddedJcefBrowser.class));
   }
 
   public Logger logger() {

Diff for: flutter-studio/src/io/flutter/android/AndroidModuleLibraryManager.java

@@ -61,10 +61,7 @@
 import java.lang.reflect.Method;
 import java.nio.file.Path;
 import java.nio.file.Paths;
-import java.util.Arrays;
-import java.util.HashSet;
-import java.util.List;
-import java.util.Set;
+import java.util.*;
 import java.util.concurrent.atomic.AtomicBoolean;
 import java.util.function.Function;
 import java.util.stream.Collectors;
@@ -263,7 +260,7 @@ private static boolean shouldIncludeRoot(String path) {
 
   @NotNull
   public static AndroidModuleLibraryManager getInstance(@NotNull final Project project) {
-    return ServiceManager.getService(project, AndroidModuleLibraryManager.class);
+    return Objects.requireNonNull(project.getService(AndroidModuleLibraryManager.class));
   }
 
   public static void startWatching(@NotNull Project project) {