Remove libmediametrics dependency from libmediaextractor

- Removes media metrics related methods in the extractor plugin.
- Puts metrics related code in one place, RemoteMediaExtractor.

Test: build & pass android.media.cts.MediaExtractorTest
Bug: 67908556
Change-Id: I5e06e6b6b5c047a3c68d90479e55f1df9061da45
diff --git a/media/libmediaextractor/MediaExtractor.cpp b/media/libmediaextractor/MediaExtractor.cpp
index 6ba7c0e..2241567 100644
--- a/media/libmediaextractor/MediaExtractor.cpp
+++ b/media/libmediaextractor/MediaExtractor.cpp
@@ -19,68 +19,26 @@
 #include <utils/Log.h>
 #include <pwd.h>
 
-#include <media/MediaAnalyticsItem.h>
 #include <media/MediaExtractor.h>
 #include <media/stagefright/foundation/ADebug.h>
 #include <media/stagefright/MetaData.h>
 
 namespace android {
 
-// key for media statistics
-static const char *kKeyExtractor = "extractor";
-
 MediaExtractor::MediaExtractor() {
     if (!LOG_NDEBUG) {
         uid_t uid = getuid();
         struct passwd *pw = getpwuid(uid);
         ALOGV("extractor created in uid: %d (%s)", getuid(), pw->pw_name);
     }
-
-    mAnalyticsItem = NULL;
-    if (MEDIA_LOG) {
-        mAnalyticsItem = new MediaAnalyticsItem(kKeyExtractor);
-        (void) mAnalyticsItem->generateSessionID();
-    }
 }
 
-MediaExtractor::~MediaExtractor() {
-
-    // log the current record, provided it has some information worth recording
-    if (MEDIA_LOG) {
-        if (mAnalyticsItem != NULL) {
-            if (mAnalyticsItem->count() > 0) {
-                mAnalyticsItem->setFinalized(true);
-                mAnalyticsItem->selfrecord();
-            }
-        }
-    }
-    if (mAnalyticsItem != NULL) {
-        delete mAnalyticsItem;
-        mAnalyticsItem = NULL;
-    }
-}
+MediaExtractor::~MediaExtractor() {}
 
 sp<MetaData> MediaExtractor::getMetaData() {
     return new MetaData;
 }
 
-status_t MediaExtractor::getMetrics(Parcel *reply) {
-
-    if (mAnalyticsItem == NULL || reply == NULL) {
-        return UNKNOWN_ERROR;
-    }
-
-    populateMetrics();
-    mAnalyticsItem->writeToParcel(reply);
-
-    return OK;
-}
-
-void MediaExtractor::populateMetrics() {
-    ALOGV("MediaExtractor::populateMetrics");
-    // normally overridden in subclasses
-}
-
 uint32_t MediaExtractor::flags() const {
     return CAN_SEEK_BACKWARD | CAN_SEEK_FORWARD | CAN_PAUSE | CAN_SEEK;
 }