默认打开开发者模式中的 “停用 HW 叠加层” 开关，并且隐藏选

需求：驱动那边有一款屏幕特殊屏幕，不打开当前选项会闪屏

1.开发者选项的布局在 “apps/Settings/res/xml/development_settings.xml” ，当然也可以通过资源id去检索目录所在；

2.隐藏选项 disable_overlays

base/packages/SettingsLib/res/values-zh-rCN/strings.xml:306:    
<string name="disable_overlays_summary" msgid="3578941133710758592">"始终使用 GPU 进行屏幕合成"</string>


<!-- 
<SwitchPreference
            android:key="disable_overlays"
            android:title="@string/disable_overlays"
            android:summary="@string/disable_overlays_summary" />
-->

3.下面是 patch

Index: android/packages/apps/Settings/src/com/android/settings/development/DevelopmentSettingsDashboardFragment.java
===================================================================
--- android/packages/apps/Settings/src/com/android/settings/development/DevelopmentSettingsDashboardFragment.java   (版本 13449)
+++ android/packages/apps/Settings/src/com/android/settings/development/DevelopmentSettingsDashboardFragment.java   (版本 13450)
@@ -466,7 +466,7 @@
         controllers.add(new DebugNonRectClipOperationsPreferenceController(context));
         controllers.add(new ForceDarkPreferenceController(context));
         controllers.add(new ForceMSAAPreferenceController(context));
-        controllers.add(new HardwareOverlaysPreferenceController(context));
+        //controllers.add(new HardwareOverlaysPreferenceController(context));
         controllers.add(new SimulateColorSpacePreferenceController(context));
         controllers.add(new UsbAudioRoutingPreferenceController(context));
         controllers.add(new StrictModePreferenceController(context));
Index: android/packages/apps/Settings/src/com/android/settings/FallbackHome.java
===================================================================
--- android/packages/apps/Settings/src/com/android/settings/FallbackHome.java   (版本 13449)
+++ android/packages/apps/Settings/src/com/android/settings/FallbackHome.java   (版本 13450)
@@ -41,6 +41,14 @@
 
 import java.util.Objects;
 
+import android.os.IBinder;
+import android.os.Parcel;
+import android.os.RemoteException;
+import android.os.ServiceManager;
+import android.os.RemoteException;
+
+import androidx.annotation.VisibleForTesting;
+
 public class FallbackHome extends Activity {
     private static final String TAG = "FallbackHome";
     private static final int PROGRESS_TIMEOUT = 2000;
@@ -74,6 +82,17 @@
         }
     };
 
+    private static final int SETTING_VALUE_ON = 1;
+    private static final int SETTING_VALUE_OFF = 0;
+    private static final int SURFACE_FLINGER_DISABLE_OVERLAYS_CODE = 1008;
+    private static final String SURFACE_COMPOSER_INTERFACE_KEY = "android.ui.ISurfaceComposer";
+    
+    static final int SURFACE_FLINGER_READ_CODE = 1010;
+    
+    static final String SURFACE_FLINGER_SERVICE_KEY = "SurfaceFlinger";
+
+    private IBinder mSurfaceFlinger;
+
     @Override
     protected void onCreate(Bundle savedInstanceState) {
         super.onCreate(savedInstanceState);
@@ -93,6 +112,7 @@
         }
 
         mWallManager = getSystemService(WallpaperManager.class);
+        writeHardwareOverlaysSetting();
         if (mWallManager == null) {
             Log.w(TAG, "Wallpaper manager isn't ready, can't listen to color changes!");
         } else {
@@ -104,6 +124,29 @@
         maybeFinish();
     }
 
+    void writeHardwareOverlaysSetting() {
+        mSurfaceFlinger = ServiceManager.getService(SURFACE_FLINGER_SERVICE_KEY);
+        try {
+            final Parcel data = Parcel.obtain();
+            /*final Parcel reply = Parcel.obtain();
+            mSurfaceFlinger.transact(SURFACE_FLINGER_READ_CODE, data, reply, 0);
+            @SuppressWarnings("unused") final int showCpu = reply.readInt();
+            @SuppressWarnings("unused") final int enableGL = reply.readInt();
+            @SuppressWarnings("unused") final int showUpdates = reply.readInt();
+            @SuppressWarnings("unused") final int showBackground = reply.readInt();
+            final int disableOverlays = reply.readInt();
+            if (disableOverlays !=SETTING_VALUE_ON) {*/
+                data.writeInterfaceToken(SURFACE_COMPOSER_INTERFACE_KEY);
+                //final int disableOverlays = isEnabled ? SETTING_VALUE_ON : SETTING_VALUE_OFF;
+                data.writeInt(SETTING_VALUE_ON);
+                mSurfaceFlinger.transact(SURFACE_FLINGER_DISABLE_OVERLAYS_CODE, data,null,0);
+                data.recycle();
+            //} 
+        } catch (RemoteException ex) {
+            // intentional no-op
+        }
+    }
+
     @Override
     protected void onResume() {
         super.onResume();
Index: android/packages/apps/Settings/res/xml/development_settings.xml
===================================================================
--- android/packages/apps/Settings/res/xml/development_settings.xml (版本 13449)
+++ android/packages/apps/Settings/res/xml/development_settings.xml (版本 13450)
@@ -441,12 +441,12 @@
             android:key="force_msaa"
             android:title="@string/force_msaa"
             android:summary="@string/force_msaa_summary" />
-
+        <!--
         <SwitchPreference
             android:key="disable_overlays"
             android:title="@string/disable_overlays"
             android:summary="@string/disable_overlays_summary" />
-
+        -->
         <ListPreference
             android:entries="@array/simulate_color_space_entries"
             android:entryValues="@array/simulate_color_space_values"