diff --git a/services/core/java/com/android/server/display/DisplayDeviceConfig.java b/services/core/java/com/android/server/display/DisplayDeviceConfig.java
index a021174..ca482dc 100644
--- a/services/core/java/com/android/server/display/DisplayDeviceConfig.java
+++ b/services/core/java/com/android/server/display/DisplayDeviceConfig.java
@@ -2396,7 +2396,6 @@
             mHbmData.timeWindowMillis = hbmTiming.getTimeWindowSecs_all().longValue() * 1000;
             mHbmData.timeMaxMillis = hbmTiming.getTimeMaxSecs_all().longValue() * 1000;
             mHbmData.timeMinMillis = hbmTiming.getTimeMinSecs_all().longValue() * 1000;
-            mHbmData.thermalStatusLimit = convertThermalStatus(hbm.getThermalStatusLimit_all());
             mHbmData.allowInLowPowerMode = hbm.getAllowInLowPowerMode_all();
             final RefreshRateRange rr = hbm.getRefreshRate_all();
             if (rr != null) {
@@ -2972,9 +2971,6 @@
         /** Brightness level at which we transition from normal to high-brightness. */
         public float transitionPoint;
 
-        /** Enable HBM only if the thermal status is not higher than this. */
-        public @PowerManager.ThermalStatus int thermalStatusLimit;
-
         /** Whether HBM is allowed when {@code Settings.Global.LOW_POWER_MODE} is active. */
         public boolean allowInLowPowerMode;
 
@@ -2993,15 +2989,13 @@
         HighBrightnessModeData() {}
 
         HighBrightnessModeData(float minimumLux, float transitionPoint, long timeWindowMillis,
-                long timeMaxMillis, long timeMinMillis,
-                @PowerManager.ThermalStatus int thermalStatusLimit, boolean allowInLowPowerMode,
+                long timeMaxMillis, long timeMinMillis, boolean allowInLowPowerMode,
                 float minimumHdrPercentOfScreen) {
             this.minimumLux = minimumLux;
             this.transitionPoint = transitionPoint;
             this.timeWindowMillis = timeWindowMillis;
             this.timeMaxMillis = timeMaxMillis;
             this.timeMinMillis = timeMinMillis;
-            this.thermalStatusLimit = thermalStatusLimit;
             this.allowInLowPowerMode = allowInLowPowerMode;
             this.minimumHdrPercentOfScreen = minimumHdrPercentOfScreen;
         }
@@ -3016,7 +3010,6 @@
             other.timeMaxMillis = timeMaxMillis;
             other.timeMinMillis = timeMinMillis;
             other.transitionPoint = transitionPoint;
-            other.thermalStatusLimit = thermalStatusLimit;
             other.allowInLowPowerMode = allowInLowPowerMode;
             other.minimumHdrPercentOfScreen = minimumHdrPercentOfScreen;
         }
@@ -3029,7 +3022,6 @@
                     + ", timeWindow: " + timeWindowMillis + "ms"
                     + ", timeMax: " + timeMaxMillis + "ms"
                     + ", timeMin: " + timeMinMillis + "ms"
-                    + ", thermalStatusLimit: " + thermalStatusLimit
                     + ", allowInLowPowerMode: " + allowInLowPowerMode
                     + ", minimumHdrPercentOfScreen: " + minimumHdrPercentOfScreen
                     + "} ";
diff --git a/services/core/java/com/android/server/display/HighBrightnessModeController.java b/services/core/java/com/android/server/display/HighBrightnessModeController.java
index ca208ac..11160a5 100644
--- a/services/core/java/com/android/server/display/HighBrightnessModeController.java
+++ b/services/core/java/com/android/server/display/HighBrightnessModeController.java
@@ -22,13 +22,8 @@
 import android.net.Uri;
 import android.os.Handler;
 import android.os.IBinder;
-import android.os.IThermalEventListener;
-import android.os.IThermalService;
 import android.os.PowerManager;
-import android.os.RemoteException;
-import android.os.ServiceManager;
 import android.os.SystemClock;
-import android.os.Temperature;
 import android.os.UserHandle;
 import android.provider.Settings;
 import android.util.MathUtils;
@@ -75,7 +70,6 @@
     private final Runnable mHbmChangeCallback;
     private final Runnable mRecalcRunnable;
     private final Clock mClock;
-    private final SkinThermalStatusObserver mSkinThermalStatusObserver;
     private final Context mContext;
     private final SettingsObserver mSettingsObserver;
     private final Injector mInjector;
@@ -100,10 +94,8 @@
 
     private int mHbmMode = BrightnessInfo.HIGH_BRIGHTNESS_MODE_OFF;
     private boolean mIsHdrLayerPresent = false;
-
     // mMaxDesiredHdrSdrRatio should only be applied when there is a valid backlight->nits mapping
     private float mMaxDesiredHdrSdrRatio = DEFAULT_MAX_DESIRED_HDR_SDR_RATIO;
-    private boolean mIsThermalStatusWithinLimit = true;
     private boolean mIsBlockedByLowPowerMode = false;
     private int mWidth;
     private int mHeight;
@@ -138,7 +130,6 @@
         mBrightnessMax = brightnessMax;
         mHbmChangeCallback = hbmChangeCallback;
         mHighBrightnessModeMetadata = hbmMetadata;
-        mSkinThermalStatusObserver = new SkinThermalStatusObserver(mInjector, mHandler);
         mSettingsObserver = new SettingsObserver(mHandler);
         mRecalcRunnable = this::recalculateTimeAllowance;
         mHdrListener = new HdrListener();
@@ -261,7 +252,6 @@
 
     void stop() {
         registerHdrListener(null /*displayToken*/);
-        mSkinThermalStatusObserver.stopObserving();
         mSettingsObserver.stopObserving();
     }
 
@@ -278,15 +268,10 @@
         mDisplayStatsId = displayUniqueId.hashCode();
 
         unregisterHdrListener();
-        mSkinThermalStatusObserver.stopObserving();
         mSettingsObserver.stopObserving();
         if (deviceSupportsHbm()) {
             registerHdrListener(displayToken);
             recalculateTimeAllowance();
-            if (mHbmData.thermalStatusLimit > PowerManager.THERMAL_STATUS_NONE) {
-                mIsThermalStatusWithinLimit = true;
-                mSkinThermalStatusObserver.startObserving();
-            }
             if (!mHbmData.allowInLowPowerMode) {
                 mIsBlockedByLowPowerMode = false;
                 mSettingsObserver.startObserving();
@@ -327,7 +312,6 @@
         pw.println("  mIsTimeAvailable= " + mIsTimeAvailable);
         pw.println("  mRunningStartTimeMillis="
                 + TimeUtils.formatUptime(mHighBrightnessModeMetadata.getRunningStartTimeMillis()));
-        pw.println("  mIsThermalStatusWithinLimit=" + mIsThermalStatusWithinLimit);
         pw.println("  mIsBlockedByLowPowerMode=" + mIsBlockedByLowPowerMode);
         pw.println("  width*height=" + mWidth + "*" + mHeight);
         pw.println("  mEvents=");
@@ -344,8 +328,6 @@
             }
             lastStartTime = dumpHbmEvent(pw, event);
         }
-
-        mSkinThermalStatusObserver.dump(pw);
     }
 
     private long dumpHbmEvent(PrintWriter pw, HbmEvent event) {
@@ -367,7 +349,7 @@
         // See {@link #getHdrBrightnessValue}.
         return !mIsHdrLayerPresent
                 && (mIsAutoBrightnessEnabled && mIsTimeAvailable && mIsInAllowedAmbientRange
-                && mIsThermalStatusWithinLimit && !mIsBlockedByLowPowerMode);
+                && !mIsBlockedByLowPowerMode);
     }
 
     private boolean deviceSupportsHbm() {
@@ -469,7 +451,6 @@
                     + ", isAutoBrightnessEnabled: " +  mIsAutoBrightnessEnabled
                     + ", mIsTimeAvailable: " + mIsTimeAvailable
                     + ", mIsInAllowedAmbientRange: " + mIsInAllowedAmbientRange
-                    + ", mIsThermalStatusWithinLimit: " + mIsThermalStatusWithinLimit
                     + ", mIsBlockedByLowPowerMode: " + mIsBlockedByLowPowerMode
                     + ", mBrightness: " + mBrightness
                     + ", mUnthrottledBrightness: " + mUnthrottledBrightness
@@ -499,13 +480,12 @@
     }
 
     private void updateHbmStats(int newMode) {
-        final float transitionPoint = mHbmData.transitionPoint;
         int state = FrameworkStatsLog.DISPLAY_HBM_STATE_CHANGED__STATE__HBM_OFF;
         if (newMode == BrightnessInfo.HIGH_BRIGHTNESS_MODE_HDR
-                && getHdrBrightnessValue() > transitionPoint) {
+                && getHdrBrightnessValue() > mHbmData.transitionPoint) {
             state = FrameworkStatsLog.DISPLAY_HBM_STATE_CHANGED__STATE__HBM_ON_HDR;
         } else if (newMode == BrightnessInfo.HIGH_BRIGHTNESS_MODE_SUNLIGHT
-                && mBrightness > transitionPoint) {
+                && mBrightness > mHbmData.transitionPoint) {
             state = FrameworkStatsLog.DISPLAY_HBM_STATE_CHANGED__STATE__HBM_ON_SUNLIGHT;
         }
         if (state == mHbmStatsState) {
@@ -519,16 +499,6 @@
         final boolean newHbmSv =
                 (state == FrameworkStatsLog.DISPLAY_HBM_STATE_CHANGED__STATE__HBM_ON_SUNLIGHT);
         if (oldHbmSv && !newHbmSv) {
-            // HighBrightnessModeController (HBMC) currently supports throttling from two sources:
-            //     1. Internal, received from HBMC.SkinThermalStatusObserver.notifyThrottling()
-            //     2. External, received from HBMC.onBrightnessChanged()
-            // TODO(b/216373254): Deprecate internal throttling source
-            final boolean internalThermalThrottling = !mIsThermalStatusWithinLimit;
-            final boolean externalThermalThrottling =
-                mUnthrottledBrightness > transitionPoint && // We would've liked HBM brightness...
-                mBrightness <= transitionPoint &&           // ...but we got NBM, because of...
-                mThrottlingReason == BrightnessInfo.BRIGHTNESS_MAX_REASON_THERMAL; // ...thermals.
-
             // If more than one conditions are flipped and turn off HBM sunlight
             // visibility, only one condition will be reported to make it simple.
             if (!mIsAutoBrightnessEnabled && mIsAutoBrightnessOffByState) {
@@ -541,7 +511,7 @@
                 reason = FrameworkStatsLog.DISPLAY_HBM_STATE_CHANGED__REASON__HBM_SV_OFF_LUX_DROP;
             } else if (!mIsTimeAvailable) {
                 reason = FrameworkStatsLog.DISPLAY_HBM_STATE_CHANGED__REASON__HBM_SV_OFF_TIME_LIMIT;
-            } else if (internalThermalThrottling || externalThermalThrottling) {
+            } else if (isThermalThrottlingActive()) {
                 reason = FrameworkStatsLog
                                  .DISPLAY_HBM_STATE_CHANGED__REASON__HBM_SV_OFF_THERMAL_LIMIT;
             } else if (mIsHdrLayerPresent) {
@@ -561,6 +531,14 @@
         mHbmStatsState = state;
     }
 
+    @VisibleForTesting
+    boolean isThermalThrottlingActive() {
+        // We would've liked HBM, but we got NBM (normal brightness mode) because of thermals.
+        return mUnthrottledBrightness > mHbmData.transitionPoint
+                && mBrightness <= mHbmData.transitionPoint
+                && mThrottlingReason == BrightnessInfo.BRIGHTNESS_MAX_REASON_THERMAL;
+    }
+
     private String hbmStatsStateToString(int hbmStatsState) {
         switch (hbmStatsState) {
         case FrameworkStatsLog.DISPLAY_HBM_STATE_CHANGED__STATE__HBM_OFF:
@@ -635,82 +613,6 @@
         }
     }
 
-    private final class SkinThermalStatusObserver extends IThermalEventListener.Stub {
-        private final Injector mInjector;
-        private final Handler mHandler;
-
-        private IThermalService mThermalService;
-        private boolean mStarted;
-
-        SkinThermalStatusObserver(Injector injector, Handler handler) {
-            mInjector = injector;
-            mHandler = handler;
-        }
-
-        @Override
-        public void notifyThrottling(Temperature temp) {
-            if (DEBUG) {
-                Slog.d(TAG, "New thermal throttling status "
-                        + ", current thermal status = " + temp.getStatus()
-                        + ", threshold = " + mHbmData.thermalStatusLimit);
-            }
-            mHandler.post(() -> {
-                mIsThermalStatusWithinLimit = temp.getStatus() <= mHbmData.thermalStatusLimit;
-                // This recalculates HbmMode and runs mHbmChangeCallback if the mode has changed
-                updateHbmMode();
-            });
-        }
-
-        void startObserving() {
-            if (mStarted) {
-                if (DEBUG) {
-                    Slog.d(TAG, "Thermal status observer already started");
-                }
-                return;
-            }
-            mThermalService = mInjector.getThermalService();
-            if (mThermalService == null) {
-                Slog.w(TAG, "Could not observe thermal status. Service not available");
-                return;
-            }
-            try {
-                // We get a callback immediately upon registering so there's no need to query
-                // for the current value.
-                mThermalService.registerThermalEventListenerWithType(this, Temperature.TYPE_SKIN);
-                mStarted = true;
-            } catch (RemoteException e) {
-                Slog.e(TAG, "Failed to register thermal status listener", e);
-            }
-        }
-
-        void stopObserving() {
-            mIsThermalStatusWithinLimit = true;
-            if (!mStarted) {
-                if (DEBUG) {
-                    Slog.d(TAG, "Stop skipped because thermal status observer not started");
-                }
-                return;
-            }
-            try {
-                mThermalService.unregisterThermalEventListener(this);
-                mStarted = false;
-            } catch (RemoteException e) {
-                Slog.e(TAG, "Failed to unregister thermal status listener", e);
-            }
-            mThermalService = null;
-        }
-
-        void dump(PrintWriter writer) {
-            writer.println("  SkinThermalStatusObserver:");
-            writer.println("    mStarted: " + mStarted);
-            if (mThermalService != null) {
-                writer.println("    ThermalService available");
-            } else {
-                writer.println("    ThermalService not available");
-            }
-        }
-    }
-
     private final class SettingsObserver extends ContentObserver {
         private final Uri mLowPowerModeSetting = Settings.Global.getUriFor(
                 Settings.Global.LOW_POWER_MODE);
@@ -766,11 +668,6 @@
             return SystemClock::uptimeMillis;
         }
 
-        public IThermalService getThermalService() {
-            return IThermalService.Stub.asInterface(
-                    ServiceManager.getService(Context.THERMAL_SERVICE));
-        }
-
         public void reportHbmStateChange(int display, int state, int reason) {
             FrameworkStatsLog.write(
                     FrameworkStatsLog.DISPLAY_HBM_STATE_CHANGED, display, state, reason);
diff --git a/services/core/xsd/display-device-config/display-device-config.xsd b/services/core/xsd/display-device-config/display-device-config.xsd
index 981844c..f96ca58 100644
--- a/services/core/xsd/display-device-config/display-device-config.xsd
+++ b/services/core/xsd/display-device-config/display-device-config.xsd
@@ -153,12 +153,6 @@
                 <xs:annotation name="nullable"/>
                 <xs:annotation name="final"/>
             </xs:element>
-            <!-- The highest (most severe) thermal status at which high-brightness-mode is allowed
-                 to operate. -->
-            <xs:element name="thermalStatusLimit" type="thermalStatus" minOccurs="0" maxOccurs="1">
-                <xs:annotation name="nonnull"/>
-                <xs:annotation name="final"/>
-            </xs:element>
             <xs:element name="allowInLowPowerMode" type="xs:boolean" minOccurs="0" maxOccurs="1">
                 <xs:annotation name="nonnull"/>
                 <xs:annotation name="final"/>
diff --git a/services/core/xsd/display-device-config/schema/current.txt b/services/core/xsd/display-device-config/schema/current.txt
index 8cb4837..ad6434e 100644
--- a/services/core/xsd/display-device-config/schema/current.txt
+++ b/services/core/xsd/display-device-config/schema/current.txt
@@ -156,7 +156,6 @@
     method @NonNull public final java.math.BigDecimal getMinimumLux_all();
     method @Nullable public final com.android.server.display.config.RefreshRateRange getRefreshRate_all();
     method @Nullable public final com.android.server.display.config.SdrHdrRatioMap getSdrHdrRatioMap_all();
-    method @NonNull public final com.android.server.display.config.ThermalStatus getThermalStatusLimit_all();
     method public com.android.server.display.config.HbmTiming getTiming_all();
     method @NonNull public final java.math.BigDecimal getTransitionPoint_all();
     method public final void setAllowInLowPowerMode_all(@NonNull boolean);
@@ -165,7 +164,6 @@
     method public final void setMinimumLux_all(@NonNull java.math.BigDecimal);
     method public final void setRefreshRate_all(@Nullable com.android.server.display.config.RefreshRateRange);
     method public final void setSdrHdrRatioMap_all(@Nullable com.android.server.display.config.SdrHdrRatioMap);
-    method public final void setThermalStatusLimit_all(@NonNull com.android.server.display.config.ThermalStatus);
     method public void setTiming_all(com.android.server.display.config.HbmTiming);
     method public final void setTransitionPoint_all(@NonNull java.math.BigDecimal);
   }
diff --git a/services/tests/servicestests/src/com/android/server/display/HighBrightnessModeControllerTest.java b/services/tests/servicestests/src/com/android/server/display/HighBrightnessModeControllerTest.java
index 3b10db4..e2a66f0 100644
--- a/services/tests/servicestests/src/com/android/server/display/HighBrightnessModeControllerTest.java
+++ b/services/tests/servicestests/src/com/android/server/display/HighBrightnessModeControllerTest.java
@@ -16,8 +16,6 @@
 
 package com.android.server.display;
 
-import static android.hardware.display.BrightnessInfo.BRIGHTNESS_MAX_REASON_NONE;
-import static android.hardware.display.BrightnessInfo.BRIGHTNESS_MAX_REASON_THERMAL;
 import static android.hardware.display.BrightnessInfo.HIGH_BRIGHTNESS_MODE_HDR;
 import static android.hardware.display.BrightnessInfo.HIGH_BRIGHTNESS_MODE_OFF;
 import static android.hardware.display.BrightnessInfo.HIGH_BRIGHTNESS_MODE_SUNLIGHT;
@@ -29,6 +27,8 @@
 import static com.android.server.display.HighBrightnessModeController.HBM_TRANSITION_POINT_INVALID;
 
 import static org.junit.Assert.assertEquals;
+import static org.junit.Assert.assertFalse;
+import static org.junit.Assert.assertTrue;
 import static org.mockito.Mockito.anyFloat;
 import static org.mockito.Mockito.anyInt;
 import static org.mockito.Mockito.eq;
@@ -39,14 +39,10 @@
 
 import android.content.Context;
 import android.content.ContextWrapper;
+import android.hardware.display.BrightnessInfo;
 import android.os.Binder;
 import android.os.Handler;
-import android.os.IThermalEventListener;
-import android.os.IThermalService;
 import android.os.Message;
-import android.os.PowerManager;
-import android.os.Temperature;
-import android.os.Temperature.ThrottlingStatus;
 import android.os.test.TestLooper;
 import android.test.mock.MockContentResolver;
 import android.util.MathUtils;
@@ -66,8 +62,6 @@
 import org.junit.Rule;
 import org.junit.Test;
 import org.junit.runner.RunWith;
-import org.mockito.ArgumentCaptor;
-import org.mockito.Captor;
 import org.mockito.Mock;
 import org.mockito.MockitoAnnotations;
 
@@ -80,7 +74,6 @@
     private static final long TIME_WINDOW_MILLIS = 55 * 1000;
     private static final long TIME_ALLOWED_IN_WINDOW_MILLIS = 12 * 1000;
     private static final long TIME_MINIMUM_AVAILABLE_TO_ENABLE_MILLIS = 5 * 1000;
-    private static final int THERMAL_STATUS_LIMIT = PowerManager.THERMAL_STATUS_SEVERE;
     private static final boolean ALLOW_IN_LOW_POWER_MODE = false;
 
     private static final float DEFAULT_MIN = 0.01f;
@@ -102,17 +95,13 @@
     @Rule
     public FakeSettingsProviderRule mSettingsProviderRule = FakeSettingsProvider.rule();
 
-    @Mock IThermalService mThermalServiceMock;
     @Mock Injector mInjectorMock;
     @Mock HighBrightnessModeController.HdrBrightnessDeviceConfig mHdrBrightnessDeviceConfigMock;
 
-    @Captor ArgumentCaptor<IThermalEventListener> mThermalEventListenerCaptor;
-
     private static final HighBrightnessModeData DEFAULT_HBM_DATA =
             new HighBrightnessModeData(MINIMUM_LUX, TRANSITION_POINT, TIME_WINDOW_MILLIS,
                     TIME_ALLOWED_IN_WINDOW_MILLIS, TIME_MINIMUM_AVAILABLE_TO_ENABLE_MILLIS,
-                    THERMAL_STATUS_LIMIT, ALLOW_IN_LOW_POWER_MODE,
-                    HDR_PERCENT_OF_SCREEN_REQUIRED_DEFAULT);
+                    ALLOW_IN_LOW_POWER_MODE, HDR_PERCENT_OF_SCREEN_REQUIRED_DEFAULT);
 
     @Before
     public void setUp() {
@@ -125,8 +114,6 @@
         mContextSpy = spy(new ContextWrapper(ApplicationProvider.getApplicationContext()));
         final MockContentResolver resolver = mSettingsProviderRule.mockContentResolver(mContextSpy);
         when(mContextSpy.getContentResolver()).thenReturn(resolver);
-
-        when(mInjectorMock.getThermalService()).thenReturn(mThermalServiceMock);
     }
 
     /////////////////
@@ -321,34 +308,14 @@
     }
 
     @Test
-    public void testNoHbmInHighThermalState() throws Exception {
+    public void testHbmIsNotTurnedOffInHighThermalState() throws Exception {
         final HighBrightnessModeController hbmc = createDefaultHbm(new OffsettableClock());
 
-        verify(mThermalServiceMock).registerThermalEventListenerWithType(
-                mThermalEventListenerCaptor.capture(), eq(Temperature.TYPE_SKIN));
-        final IThermalEventListener listener = mThermalEventListenerCaptor.getValue();
+        // Disabled thermal throttling
+        hbmc.onBrightnessChanged(/*brightness=*/ 1f, /*unthrottledBrightness*/ 1f,
+                BrightnessInfo.BRIGHTNESS_MAX_REASON_NONE);
 
-        // Set the thermal status too high.
-        listener.notifyThrottling(getSkinTemp(Temperature.THROTTLING_CRITICAL));
-
-        // Try to go into HBM mode but fail
-        hbmc.setAutoBrightnessEnabled(AUTO_BRIGHTNESS_ENABLED);
-        hbmc.onAmbientLuxChange(MINIMUM_LUX + 1);
-        advanceTime(10);
-
-        assertEquals(HIGH_BRIGHTNESS_MODE_OFF, hbmc.getHighBrightnessMode());
-    }
-
-    @Test
-    public void testHbmTurnsOffInHighThermalState() throws Exception {
-        final HighBrightnessModeController hbmc = createDefaultHbm(new OffsettableClock());
-
-        verify(mThermalServiceMock).registerThermalEventListenerWithType(
-                mThermalEventListenerCaptor.capture(), eq(Temperature.TYPE_SKIN));
-        final IThermalEventListener listener = mThermalEventListenerCaptor.getValue();
-
-        // Set the thermal status tolerable
-        listener.notifyThrottling(getSkinTemp(Temperature.THROTTLING_LIGHT));
+        assertFalse(hbmc.isThermalThrottlingActive());
 
         // Try to go into HBM mode
         hbmc.setAutoBrightnessEnabled(AUTO_BRIGHTNESS_ENABLED);
@@ -357,15 +324,19 @@
 
         assertEquals(HIGH_BRIGHTNESS_MODE_SUNLIGHT, hbmc.getHighBrightnessMode());
 
-        // Set the thermal status too high and verify we're off.
-        listener.notifyThrottling(getSkinTemp(Temperature.THROTTLING_CRITICAL));
+        // Enable thermal throttling
+        hbmc.onBrightnessChanged(/*brightness=*/ TRANSITION_POINT - 0.01f,
+                /*unthrottledBrightness*/ 1f, BrightnessInfo.BRIGHTNESS_MAX_REASON_THERMAL);
         advanceTime(10);
-        assertEquals(HIGH_BRIGHTNESS_MODE_OFF, hbmc.getHighBrightnessMode());
+        assertEquals(HIGH_BRIGHTNESS_MODE_SUNLIGHT, hbmc.getHighBrightnessMode());
+        assertTrue(hbmc.isThermalThrottlingActive());
 
-        // Set the thermal status low again and verify we're back on.
-        listener.notifyThrottling(getSkinTemp(Temperature.THROTTLING_SEVERE));
+        // Disabled thermal throttling
+        hbmc.onBrightnessChanged(/*brightness=*/ 1f, /*unthrottledBrightness*/ 1f,
+                BrightnessInfo.BRIGHTNESS_MAX_REASON_NONE);
         advanceTime(1);
         assertEquals(HIGH_BRIGHTNESS_MODE_SUNLIGHT, hbmc.getHighBrightnessMode());
+        assertFalse(hbmc.isThermalThrottlingActive());
     }
 
     @Test
@@ -578,33 +549,6 @@
             anyInt());
     }
 
-    // Test reporting of thermal throttling when triggered by HighBrightnessModeController's
-    // internal thermal throttling.
-    @Test
-    public void testHbmStats_InternalThermalOff() throws Exception {
-        final HighBrightnessModeController hbmc = createDefaultHbm(new OffsettableClock());
-        final int displayStatsId = mDisplayUniqueId.hashCode();
-
-        verify(mThermalServiceMock).registerThermalEventListenerWithType(
-                mThermalEventListenerCaptor.capture(), eq(Temperature.TYPE_SKIN));
-        final IThermalEventListener thermListener = mThermalEventListenerCaptor.getValue();
-
-        hbmc.setAutoBrightnessEnabled(AUTO_BRIGHTNESS_ENABLED);
-        hbmc.onAmbientLuxChange(MINIMUM_LUX + 1);
-        hbmcOnBrightnessChanged(hbmc, TRANSITION_POINT + 0.01f);
-        advanceTime(1);
-        verify(mInjectorMock).reportHbmStateChange(eq(displayStatsId),
-            eq(FrameworkStatsLog.DISPLAY_HBM_STATE_CHANGED__STATE__HBM_ON_SUNLIGHT),
-            eq(FrameworkStatsLog.DISPLAY_HBM_STATE_CHANGED__REASON__HBM_TRANSITION_REASON_UNKNOWN));
-
-        thermListener.notifyThrottling(getSkinTemp(Temperature.THROTTLING_CRITICAL));
-        advanceTime(10);
-        assertEquals(HIGH_BRIGHTNESS_MODE_OFF, hbmc.getHighBrightnessMode());
-        verify(mInjectorMock).reportHbmStateChange(eq(displayStatsId),
-            eq(FrameworkStatsLog.DISPLAY_HBM_STATE_CHANGED__STATE__HBM_OFF),
-            eq(FrameworkStatsLog.DISPLAY_HBM_STATE_CHANGED__REASON__HBM_SV_OFF_THERMAL_LIMIT));
-    }
-
     // Test reporting of thermal throttling when triggered externally through
     // HighBrightnessModeController.onBrightnessChanged()
     @Test
@@ -617,14 +561,16 @@
         hbmc.setAutoBrightnessEnabled(AUTO_BRIGHTNESS_ENABLED);
         hbmc.onAmbientLuxChange(MINIMUM_LUX + 1);
         // Brightness is unthrottled, HBM brightness granted
-        hbmc.onBrightnessChanged(hbmBrightness, hbmBrightness, BRIGHTNESS_MAX_REASON_NONE);
+        hbmc.onBrightnessChanged(hbmBrightness, hbmBrightness,
+                BrightnessInfo.BRIGHTNESS_MAX_REASON_NONE);
         advanceTime(1);
         verify(mInjectorMock).reportHbmStateChange(eq(displayStatsId),
             eq(FrameworkStatsLog.DISPLAY_HBM_STATE_CHANGED__STATE__HBM_ON_SUNLIGHT),
             eq(FrameworkStatsLog.DISPLAY_HBM_STATE_CHANGED__REASON__HBM_TRANSITION_REASON_UNKNOWN));
 
         // Brightness is thermally throttled, HBM brightness denied (NBM brightness granted)
-        hbmc.onBrightnessChanged(nbmBrightness, hbmBrightness, BRIGHTNESS_MAX_REASON_THERMAL);
+        hbmc.onBrightnessChanged(nbmBrightness, hbmBrightness,
+                BrightnessInfo.BRIGHTNESS_MAX_REASON_THERMAL);
         advanceTime(1);
         // We expect HBM mode to remain set to sunlight, indicating that HBMC *allows* this mode.
         // However, we expect the HBM state reported by HBMC to be off, since external thermal
@@ -784,11 +730,7 @@
         mTestLooper.dispatchAll();
     }
 
-    private Temperature getSkinTemp(@ThrottlingStatus int status) {
-        return new Temperature(30.0f, Temperature.TYPE_SKIN, "test_skin_temp", status);
-    }
-
     private void hbmcOnBrightnessChanged(HighBrightnessModeController hbmc, float brightness) {
-        hbmc.onBrightnessChanged(brightness, brightness, BRIGHTNESS_MAX_REASON_NONE);
+        hbmc.onBrightnessChanged(brightness, brightness, BrightnessInfo.BRIGHTNESS_MAX_REASON_NONE);
     }
 }