Exit dream mode on CEC wake message received

Bug: 183945838
Test: atest
Change-Id: I45c925e6fbba2b510482bb686d88294cadcc400f

services/core/java/com/android/server/hdmi/HdmiCecLocalDevicePlayback.java

@@ -257,18 +257,6 @@ public class HdmiCecLocalDevicePlayback extends HdmiCecLocalDeviceSource {
         return super.handleUserControlPressed(message);
     }
 
-    @Override
-    protected void wakeUpIfActiveSource() {
-        if (!isActiveSource()) {
-            return;
-        }
-        // Wake up the device if the power is in standby mode, or its screen is off -
-        // which can happen if the device is holding a partial lock.
-        if (mService.isPowerStandbyOrTransient() || !mService.getPowerManager().isScreenOn()) {
-            mService.wakeUp();
-        }
-    }
-
     @ServiceThreadOnly
     protected boolean handleSetMenuLanguage(HdmiCecMessage message) {
         assertRunOnServiceThread();

services/core/java/com/android/server/hdmi/HdmiCecLocalDeviceSource.java

@@ -369,7 +369,7 @@ abstract class HdmiCecLocalDeviceSource extends HdmiCecLocalDevice {
         if (!isActiveSource()) {
             return;
         }
-        // Wake up the device
+        // Wake up the device. This will also exit dream mode.
         mService.wakeUp();
         return;
     }