Use uppercase for hex literals.

-------------
Created by MOE: https://github.com/google/moe
MOE_MIGRATED_REVID=112252404

library/src/main/java/com/google/android/exoplayer/extractor/mp4/FragmentedMp4Extractor.java

@@ -660,7 +660,7 @@ public final class FragmentedMp4Extractor implements Extractor {
       }
       long referenceDuration = atom.readUnsignedInt();
 
-      sizes[i] = 0x7fffffff & firstInt;
+      sizes[i] = 0x7FFFFFFF & firstInt;
       offsets[i] = offset;
 
       // Calculate time and duration values such that any rounding errors are consistent. i.e. That

library/src/main/java/com/google/android/exoplayer/text/ttml/TtmlColorParser.java

@@ -93,7 +93,7 @@ import java.util.regex.Pattern;
       long color = Long.parseLong(colorExpression.substring(1), 16);
       if (colorExpression.length() == 7) {
         // Set the alpha value
-        color |= 0x00000000ff000000;
+        color |= 0x00000000FF000000;
       } else if (colorExpression.length() != 9) {
         throw new IllegalArgumentException();
       }