Reduce visibility of DevInternalSettings class (#37256)

Summary:
Pull Request resolved: #37256

This class is public but annotated with VisibleForTesting which is not correct (as there are no tests for it).
Apparently this class is used only within this package so it's safe to reduce its visibility to package internal.

On top of this, we had methods which were not annotated with Override, which I've fixed + I've sorted the methods to have first all the public/Override ones and the then others after.

Changelog:
[Android] [Removed] - Reduce visibility of DevInternalSettings class

Reviewed By: mdvacca

Differential Revision: D45566473

fbshipit-source-id: 2c0e809094bb965f2d6263e7b2eae17a1f095165

packages/react-native/ReactAndroid/src/main/java/com/facebook/react/devsupport/DevInternalSettings.java

@@ -10,18 +10,16 @@
 import android.content.Context;
 import android.content.SharedPreferences;
 import android.preference.PreferenceManager;
-import com.facebook.react.common.annotations.VisibleForTesting;
 import com.facebook.react.common.build.ReactBuildConfig;
 import com.facebook.react.modules.debug.interfaces.DeveloperSettings;
 import com.facebook.react.packagerconnection.PackagerConnectionSettings;
 
 /**
- * Helper class for accessing developers settings that should not be accessed outside of the package
+ * Helper class for accessing developers settings that can not be accessed outside of the package
  * {@link com.facebook.react.devsupport}. For accessing some of the settings by external modules
  * this class implements an external interface {@link DeveloperSettings}.
  */
-@VisibleForTesting
-public class DevInternalSettings
+class DevInternalSettings
     implements DeveloperSettings, SharedPreferences.OnSharedPreferenceChangeListener {
 
   private static final String PREFS_FPS_DEBUG_KEY = "fps_debug";
@@ -45,19 +43,11 @@ public DevInternalSettings(Context applicationContext, Listener listener) {
     mPackagerConnectionSettings = new PackagerConnectionSettings(applicationContext);
   }
 
-  public PackagerConnectionSettings getPackagerConnectionSettings() {
-    return mPackagerConnectionSettings;
-  }
-
   @Override
   public boolean isFpsDebugEnabled() {
     return mPreferences.getBoolean(PREFS_FPS_DEBUG_KEY, false);
   }
 
-  public void setFpsDebugEnabled(boolean enabled) {
-    mPreferences.edit().putBoolean(PREFS_FPS_DEBUG_KEY, enabled).apply();
-  }
-
   @Override
   public boolean isAnimationFpsDebugEnabled() {
     return mPreferences.getBoolean(PREFS_ANIMATIONS_DEBUG_KEY, false);
@@ -68,15 +58,12 @@ public boolean isJSDevModeEnabled() {
     return mPreferences.getBoolean(PREFS_JS_DEV_MODE_DEBUG_KEY, true);
   }
 
-  public void setJSDevModeEnabled(boolean value) {
-    mPreferences.edit().putBoolean(PREFS_JS_DEV_MODE_DEBUG_KEY, value).apply();
-  }
-
   @Override
   public boolean isJSMinifyEnabled() {
     return mPreferences.getBoolean(PREFS_JS_MINIFY_DEBUG_KEY, false);
   }
 
+  @Override
   public void onSharedPreferenceChanged(SharedPreferences sharedPreferences, String key) {
     if (mListener != null) {
       if (PREFS_FPS_DEBUG_KEY.equals(key)
@@ -88,22 +75,11 @@ public void onSharedPreferenceChanged(SharedPreferences sharedPreferences, Strin
     }
   }
 
-  public boolean isHotModuleReplacementEnabled() {
-    return mPreferences.getBoolean(PREFS_HOT_MODULE_REPLACEMENT_KEY, true);
-  }
-
-  public void setHotModuleReplacementEnabled(boolean enabled) {
-    mPreferences.edit().putBoolean(PREFS_HOT_MODULE_REPLACEMENT_KEY, enabled).apply();
-  }
-
+  @Override
   public boolean isElementInspectorEnabled() {
     return mPreferences.getBoolean(PREFS_INSPECTOR_DEBUG_KEY, false);
   }
 
-  public void setElementInspectorEnabled(boolean enabled) {
-    mPreferences.edit().putBoolean(PREFS_INSPECTOR_DEBUG_KEY, enabled).apply();
-  }
-
   @Override
   public boolean isDeviceDebugEnabled() {
     return ReactBuildConfig.IS_INTERNAL_BUILD && ReactBuildConfig.DEBUG;
@@ -129,6 +105,30 @@ public void addMenuItem(String title) {
     // Not supported.
   }
 
+  void setElementInspectorEnabled(boolean enabled) {
+    mPreferences.edit().putBoolean(PREFS_INSPECTOR_DEBUG_KEY, enabled).apply();
+  }
+
+  boolean isHotModuleReplacementEnabled() {
+    return mPreferences.getBoolean(PREFS_HOT_MODULE_REPLACEMENT_KEY, true);
+  }
+
+  void setHotModuleReplacementEnabled(boolean enabled) {
+    mPreferences.edit().putBoolean(PREFS_HOT_MODULE_REPLACEMENT_KEY, enabled).apply();
+  }
+
+  void setJSDevModeEnabled(boolean value) {
+    mPreferences.edit().putBoolean(PREFS_JS_DEV_MODE_DEBUG_KEY, value).apply();
+  }
+
+  void setFpsDebugEnabled(boolean enabled) {
+    mPreferences.edit().putBoolean(PREFS_FPS_DEBUG_KEY, enabled).apply();
+  }
+
+  PackagerConnectionSettings getPackagerConnectionSettings() {
+    return mPackagerConnectionSettings;
+  }
+
   public interface Listener {
     void onInternalSettingsChanged();
   }