Remove @NoSideEffects

chrome/android/java/proguard.flags

 # Keep line number information, useful for stack traces.
 -keepattributes SourceFile,LineNumberTable
 
 # Keep the annotations.
 -keep @interface ***
 
 # Disable obfuscation for the following two packages.
 -keepnames class com.google.android.apps.chrome.**,org.chromium.** {
   *;
 }
@@ skipping 14 matching lines @@
   @**.UsedByReflection <methods>;
   @**.VisibleForTesting *;
   native <methods>;
 }
 
 # Keep all runtime visible annotations
 -keepattributes RuntimeVisibleAnnotations
 
 # Remove methods annotated with this if their return value is unused
 -assumenosideeffects class * {
-  @org.chromium.base.annotations.NoSideEffects <methods>;
   @org.chromium.base.annotations.RemovableInRelease <methods>;
 }
 
 # TODO(aurimas): figure out why we need to keep these classes.
 -keep class org.chromium.base.test.** {
   *;
 }
 
 # Keep protobuf code used via reflection
 # TODO(tonyg): Removing these -keeps results in new notes, but nothing seems to
@@ skipping 65 matching lines @@
 }
 
 -keep class com.google.android.gms.cast.CastMediaControlIntent* {
   *;
 }
 
 # fling is used by Android WebView and a Chrome test.
 -keepclassmembers class org.chromium.content.browser.ContentViewCore {
   public void fling(long, int, int, int, int);
 }