Revert "transcoding: add thermal status listener"

This reverts commit a960d1d94d2ef121d6fab50eeb89bfdae6c2d16a.

Reason for revert: broke build due to race condition with automerger

Change-Id: I1e64e54bf1c37a9cf8cddf9128469b0fbf931e8b
diff --git a/media/libmediatranscoding/TranscodingSessionController.cpp b/media/libmediatranscoding/TranscodingSessionController.cpp
index 09ad3cd..b77a3a4 100644
--- a/media/libmediatranscoding/TranscodingSessionController.cpp
+++ b/media/libmediatranscoding/TranscodingSessionController.cpp
@@ -63,12 +63,10 @@
 TranscodingSessionController::TranscodingSessionController(
         const std::shared_ptr<TranscoderInterface>& transcoder,
         const std::shared_ptr<UidPolicyInterface>& uidPolicy,
-        const std::shared_ptr<ResourcePolicyInterface>& resourcePolicy,
-        const std::shared_ptr<ThermalPolicyInterface>& thermalPolicy)
+        const std::shared_ptr<ResourcePolicyInterface>& resourcePolicy)
       : mTranscoder(transcoder),
         mUidPolicy(uidPolicy),
         mResourcePolicy(resourcePolicy),
-        mThermalPolicy(thermalPolicy),
         mCurrentSession(nullptr),
         mResourceLost(false) {
     // Only push empty offline queue initially. Realtime queues are added when requests come in.
@@ -76,7 +74,6 @@
     mOfflineUidIterator = mUidSortedList.begin();
     mSessionQueues.emplace(OFFLINE_UID, SessionQueueType());
     mUidPackageNames[OFFLINE_UID] = "(offline)";
-    mThermalThrottling = thermalPolicy->getThrottlingStatus();
 }
 
 TranscodingSessionController::~TranscodingSessionController() {}
@@ -144,7 +141,7 @@
 
     snprintf(buffer, SIZE, "\n========== Dumping past sessions =========\n");
     result.append(buffer);
-    for (auto& session : mSessionHistory) {
+    for (auto &session : mSessionHistory) {
         dumpSession_l(session, result, true /*closedSession*/);
     }
 
@@ -195,27 +192,18 @@
           topSession == nullptr ? "null" : sessionToString(topSession->key).c_str(),
           curSession == nullptr ? "null" : sessionToString(curSession->key).c_str());
 
-    if (topSession == nullptr) {
-        mCurrentSession = nullptr;
-        return;
-    }
-
-    bool shouldBeRunning = !((mResourcePolicy != nullptr && mResourceLost) ||
-                             (mThermalPolicy != nullptr && mThermalThrottling));
     // If we found a topSession that should be run, and it's not already running,
     // take some actions to ensure it's running.
-    if (topSession != curSession ||
-        (shouldBeRunning ^ (topSession->getState() == Session::RUNNING))) {
-        // If current session is running, pause it first. Note this is true for either
-        // cases: 1) If top session is changing, or 2) if top session is not changing but
-        // the topSession's state is changing.
+    if (topSession != nullptr &&
+        (topSession != curSession || topSession->getState() != Session::RUNNING)) {
+        // If another session is currently running, pause it first.
         if (curSession != nullptr && curSession->getState() == Session::RUNNING) {
             mTranscoder->pause(curSession->key.first, curSession->key.second);
             curSession->setState(Session::PAUSED);
         }
-        // If we are not experiencing resource loss nor thermal throttling, we can start
-        // or resume the topSession now.
-        if (shouldBeRunning) {
+        // If we are not experiencing resource loss, we can start or resume
+        // the topSession now.
+        if (!mResourceLost) {
             if (topSession->getState() == Session::NOT_STARTED) {
                 mTranscoder->start(topSession->key.first, topSession->key.second,
                                    topSession->request, topSession->callback.lock());
@@ -578,9 +566,7 @@
         if (clientCallback != nullptr) {
             clientCallback->onTranscodingPaused(sessionKey.second);
         }
-        if (mResourcePolicy != nullptr) {
-            mResourcePolicy->setPidResourceLost(resourceLostSession->request.clientPid);
-        }
+        mResourcePolicy->setPidResourceLost(resourceLostSession->request.clientPid);
         mResourceLost = true;
 
         validateState_l();
@@ -627,36 +613,6 @@
     validateState_l();
 }
 
-void TranscodingSessionController::onThrottlingStarted() {
-    std::scoped_lock lock{mLock};
-
-    if (mThermalThrottling) {
-        return;
-    }
-
-    ALOGI("%s", __FUNCTION__);
-
-    mThermalThrottling = true;
-    updateCurrentSession_l();
-
-    validateState_l();
-}
-
-void TranscodingSessionController::onThrottlingStopped() {
-    std::scoped_lock lock{mLock};
-
-    if (!mThermalThrottling) {
-        return;
-    }
-
-    ALOGI("%s", __FUNCTION__);
-
-    mThermalThrottling = false;
-    updateCurrentSession_l();
-
-    validateState_l();
-}
-
 void TranscodingSessionController::validateState_l() {
 #ifdef VALIDATE_STATE
     LOG_ALWAYS_FATAL_IF(mSessionQueues.count(OFFLINE_UID) != 1,