Dynamic audio policies input on UID

When looking for an input, take attributes and UID into account.

Bug: 169964607
Test: atest com.google.android.gts.audio.AudioHostTest, manual testing
Change-Id: Icbbef77a57e4b39782bd1e56d723473f370a8504
diff --git a/services/audiopolicy/engine/interface/EngineInterface.h b/services/audiopolicy/engine/interface/EngineInterface.h
index 6a1d269..518f86e 100644
--- a/services/audiopolicy/engine/interface/EngineInterface.h
+++ b/services/audiopolicy/engine/interface/EngineInterface.h
@@ -173,8 +173,10 @@
      * @param[out] mix to be used if a mix has been installed for the given audio attributes.
      * @return selected input device for the audio attributes, may be null if error.
      */
-    virtual sp<DeviceDescriptor> getInputDeviceForAttributes(
-            const audio_attributes_t &attr, sp<AudioPolicyMix> *mix = nullptr) const = 0;
+    virtual sp<DeviceDescriptor> getInputDeviceForAttributes(const audio_attributes_t &attr,
+                                                             uid_t uid = 0,
+                                                             sp<AudioPolicyMix> *mix = nullptr)
+                                                             const = 0;
 
     /**
      * Get the legacy stream type for a given audio attributes.