Suppress proguard notes about unresolved classes

In the case of the components we deliberately access via
reflection, it's normal that they might not be resolved
due to proguarding (i.e. if the app isn't being built to
include them). Don't note their omission.

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Created by MOE: https://github.com/google/moe
MOE_MIGRATED_REVID=184120611

demos/main/proguard-rules.txt

 # Proguard rules specific to the main demo app.
 
 # Constructor accessed via reflection in PlayerActivity
+-dontnote com.google.android.exoplayer2.ext.ima.ImaAdsLoader
 -keepclassmembers class com.google.android.exoplayer2.ext.ima.ImaAdsLoader {
   <init>(android.content.Context, android.net.Uri);
 }

demos/main/src/main/proguard-rules.txt

 # Proguard rules specific to the main demo app.
 
 # Constructor accessed via reflection in PlayerActivity
+-dontnote com.google.android.exoplayer2.ext.ima.ImaAdsLoader
 -keepclassmembers class com.google.android.exoplayer2.ext.ima.ImaAdsLoader {
   <init>(android.content.Context, android.net.Uri);
 }

library/core/proguard-rules.txt

 # Proguard rules specific to the core module.
 
 # Constructors accessed via reflection in DefaultRenderersFactory
+-dontnote com.google.android.exoplayer2.ext.vp9.LibvpxVideoRenderer
 -keepclassmembers class com.google.android.exoplayer2.ext.vp9.LibvpxVideoRenderer {
   <init>(boolean, long, android.os.Handler, com.google.android.exoplayer2.video.VideoRendererEventListener, int);
 }
+-dontnote com.google.android.exoplayer2.ext.opus.LibopusAudioRenderer
 -keepclassmembers class com.google.android.exoplayer2.ext.opus.LibopusAudioRenderer {
   <init>(android.os.Handler, com.google.android.exoplayer2.audio.AudioRendererEventListener, com.google.android.exoplayer2.audio.AudioProcessor[]);
 }
+-dontnote com.google.android.exoplayer2.ext.flac.LibflacAudioRenderer
 -keepclassmembers class com.google.android.exoplayer2.ext.flac.LibflacAudioRenderer {
   <init>(android.os.Handler, com.google.android.exoplayer2.audio.AudioRendererEventListener, com.google.android.exoplayer2.audio.AudioProcessor[]);
 }
+-dontnote com.google.android.exoplayer2.ext.ffmpeg.FfmpegAudioRenderer
 -keepclassmembers class com.google.android.exoplayer2.ext.ffmpeg.FfmpegAudioRenderer {
   <init>(android.os.Handler, com.google.android.exoplayer2.audio.AudioRendererEventListener, com.google.android.exoplayer2.audio.AudioProcessor[]);
 }
 
 # Constructors accessed via reflection in DefaultExtractorsFactory
+-dontnote com.google.android.exoplayer2.ext.flac.FlacExtractor
 -keepclassmembers class com.google.android.exoplayer2.ext.flac.FlacExtractor {
   <init>();
 }
 
 # Constructors accessed via reflection in DefaultDataSource
+-dontnote com.google.android.exoplayer2.ext.rtmp.RtmpDataSource
 -keepclassmembers class com.google.android.exoplayer2.ext.rtmp.RtmpDataSource {
   <init>();
 }