Rollback of https://github.com/google/ExoPlayer/commit/f790d105b76cb92ac31cf0ab6c9557a41b4bc15b

*** Original commit ***

Remove usage of @ForOverride.

Fixes the gradle compilation failures.

Gradle dependencies need revising if we want to be using this, as
checkerframework is ahead of their latest version, such that we
can't compile.

***

PiperOrigin-RevId: 412901827

library/transformer/build.gradle

@@ -38,6 +38,7 @@ android {
 dependencies {
 dependencies {
     implementation 'androidx.annotation:annotation:' + androidxAnnotationVersion
     implementation 'androidx.annotation:annotation:' + androidxAnnotationVersion
     implementation project(modulePrefix + 'library-core')
     implementation project(modulePrefix + 'library-core')
+    compileOnly 'com.google.errorprone:error_prone_annotations:' + errorProneVersion
     compileOnly 'org.checkerframework:checker-qual:' + checkerframeworkVersion
     compileOnly 'org.checkerframework:checker-qual:' + checkerframeworkVersion
     compileOnly 'org.checkerframework:checker-compat-qual:' + checkerframeworkCompatVersion
     compileOnly 'org.checkerframework:checker-compat-qual:' + checkerframeworkCompatVersion
     compileOnly 'org.jetbrains.kotlin:kotlin-annotations-jvm:' + kotlinAnnotationsVersion
     compileOnly 'org.jetbrains.kotlin:kotlin-annotations-jvm:' + kotlinAnnotationsVersion

library/transformer/src/main/java/com/google/android/exoplayer2/transformer/TransformerBaseRenderer.java

@@ -29,6 +29,7 @@ import com.google.android.exoplayer2.decoder.DecoderInputBuffer;
 import com.google.android.exoplayer2.source.SampleStream.ReadDataResult;
 import com.google.android.exoplayer2.source.SampleStream.ReadDataResult;
 import com.google.android.exoplayer2.util.MediaClock;
 import com.google.android.exoplayer2.util.MediaClock;
 import com.google.android.exoplayer2.util.MimeTypes;
 import com.google.android.exoplayer2.util.MimeTypes;
+import com.google.errorprone.annotations.ForOverride;
 import org.checkerframework.checker.nullness.qual.EnsuresNonNullIf;
 import org.checkerframework.checker.nullness.qual.EnsuresNonNullIf;
 import org.checkerframework.checker.nullness.qual.MonotonicNonNull;
 import org.checkerframework.checker.nullness.qual.MonotonicNonNull;
 import org.checkerframework.checker.nullness.qual.RequiresNonNull;
 import org.checkerframework.checker.nullness.qual.RequiresNonNull;
@@ -133,6 +134,7 @@ import org.checkerframework.checker.nullness.qual.RequiresNonNull;
     muxerWrapperTrackEnded = false;
     muxerWrapperTrackEnded = false;
   }
   }
 
 
+  @ForOverride
   @EnsuresNonNullIf(expression = "samplePipeline", result = true)
   @EnsuresNonNullIf(expression = "samplePipeline", result = true)
   protected abstract boolean ensureConfigured() throws ExoPlaybackException;
   protected abstract boolean ensureConfigured() throws ExoPlaybackException;