Use 'bitrate' not 'bit-rate' consistently.

library/src/main/java/com/google/android/exoplayer/mp4/CommonMp4AtomParsers.java

@@ -37,8 +37,8 @@ public final class CommonMp4AtomParsers {
 
   /** Channel counts for AC-3 audio, indexed by acmod. (See ETSI TS 102 366.) */
   private static final int[] AC3_CHANNEL_COUNTS = new int[] {2, 1, 2, 3, 3, 4, 4, 5};
-  /** Nominal bit-rates for AC-3 audio in kbps, indexed by bit_rate_code. (See ETSI TS 102 366.) */
-  private static final int[] AC3_BIT_RATES = new int[] {32, 40, 48, 56, 64, 80, 96, 112, 128, 160,
+  /** Nominal bitrates for AC-3 audio in kbps, indexed by bit_rate_code. (See ETSI TS 102 366.) */
+  private static final int[] AC3_BITRATES = new int[] {32, 40, 48, 56, 64, 80, 96, 112, 128, 160,
       192, 224, 256, 320, 384, 448, 512, 576, 640};
 
   /**
@@ -639,8 +639,8 @@ public final class CommonMp4AtomParsers {
       channelCount++;
     }
 
-    // Map bit_rate_code onto a bit-rate in kbit/s.
-    int bitrate = AC3_BIT_RATES[((nextByte & 0x03) << 3) + (parent.readUnsignedByte() >> 5)];
+    // Map bit_rate_code onto a bitrate in kbit/s.
+    int bitrate = AC3_BITRATES[((nextByte & 0x03) << 3) + (parent.readUnsignedByte() >> 5)];
 
     return new Ac3Format(channelCount, sampleRate, bitrate);
   }