Fix missing declared accessibility PreferenceControllers.

This includes 3 fixes:

Adds missing settings:controller attribute for bold & high-contrast
text preferences.

Separates VibrationSettings into two fragments, one per fragment XML resource.
  Instead of using a conditional to choose the XML resource ID,
  we now use the conditional to choose which fragment to launch.
  This allows both fragment's preference controllers to be inspected
  by CodeInspectionTest#runSliceControllerInXmlInspection.
  Also updates the preference keys which must be unique per XML in order
  to appear in Settings Search.

Adds Magnification preference controllers to exempt-not-in-XML list.
  These controllers are for fragments that are not declared in an XML.
  See ToggleScreenMagnificationPreferenceFragment
        #getPreferenceScreenResId.

Bug: 289967175
Test: atest SettingsRoboTests:com.android.settings.accessibility
Test: atest CodeInspectionTest#runSliceControllerInXmlInspection;
      Observe no errors in the accessibility package.
Test: Open Settings > Accessibility > Vibration & haptics;
      observe vibration intensity page is shown (behavior unchanged).
      Hardcode config_vibration_supported_intensity_levels=1;
      observe vibration page with toggles is shown (behavior unchanged).
Change-Id: I257b5ad390371bedb1623af6289016b06d478707

tests/robotests/src/com/android/settings/accessibility/VibrationSettingsTest.java

@@ -0,0 +1,97 @@
+/*
+ * Copyright (C) 2023 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package com.android.settings.accessibility;
+
+import static com.google.common.truth.Truth.assertThat;
+import static org.mockito.Mockito.spy;
+import static org.mockito.Mockito.when;
+
+import android.app.settings.SettingsEnums;
+import android.content.Context;
+import android.content.res.Resources;
+import android.platform.test.annotations.RequiresFlagsEnabled;
+import android.platform.test.flag.junit.CheckFlagsRule;
+import android.platform.test.flag.junit.DeviceFlagsValueProvider;
+
+import androidx.test.core.app.ApplicationProvider;
+
+import com.android.settings.R;
+import com.android.settings.flags.Flags;
+
+import org.junit.Before;
+import org.junit.Rule;
+import org.junit.Test;
+import org.junit.runner.RunWith;
+import org.robolectric.RobolectricTestRunner;
+
+/** Tests for {@link VibrationSettings} fragment. */
+@RunWith(RobolectricTestRunner.class)
+@RequiresFlagsEnabled(Flags.FLAG_SEPARATE_ACCESSIBILITY_VIBRATION_SETTINGS_FRAGMENTS)
+public class VibrationSettingsTest {
+
+    @Rule
+    public final CheckFlagsRule mCheckFlagsRule = DeviceFlagsValueProvider.createCheckFlagsRule();
+
+    private Context mContext;
+    private Resources mResources;
+    private VibrationSettings mFragment;
+
+    @Before
+    public void setUp() {
+        mContext = spy(ApplicationProvider.getApplicationContext());
+        mResources = spy(mContext.getResources());
+        when(mContext.getResources()).thenReturn(mResources);
+        mFragment = new VibrationSettings();
+    }
+
+    @Test
+    public void getMetricsCategory_returnsCorrectCategory() {
+        assertThat(mFragment.getMetricsCategory()).isEqualTo(
+                SettingsEnums.ACCESSIBILITY_VIBRATION);
+    }
+
+    @Test
+    public void getHelpResource_returnsCorrectString() {
+        assertThat(mFragment.getHelpResource()).isEqualTo(
+                R.string.help_uri_accessibility_vibration);
+    }
+
+    @Test
+    public void getPreferenceScreenResId_returnsCorrectXml() {
+        assertThat(mFragment.getPreferenceScreenResId()).isEqualTo(
+                R.xml.accessibility_vibration_settings);
+    }
+
+    @Test
+    public void getLogTag_returnsCorrectTag() {
+        assertThat(mFragment.getLogTag()).isEqualTo("VibrationSettings");
+    }
+
+    @Test
+    public void isPageSearchEnabled_oneIntensityLevel_returnsTrue() {
+        when(mResources.getInteger(R.integer.config_vibration_supported_intensity_levels))
+                .thenReturn(1);
+        assertThat(VibrationSettings.isPageSearchEnabled(mContext)).isTrue();
+    }
+
+    @Test
+    public void isPageSearchEnabled_multipleIntensityLevels_returnsFalse() {
+        when(mResources.getInteger(R.integer.config_vibration_supported_intensity_levels))
+                .thenReturn(2);
+        assertThat(VibrationSettings.isPageSearchEnabled(mContext)).isFalse();
+    }
+}