Fix lint errors when building release

-------------
Created by MOE: https://github.com/google/moe
MOE_MIGRATED_REVID=154201059

library/ui/src/main/java/com/google/android/exoplayer2/ui/DefaultTimeBar.java

@@ -186,9 +186,8 @@ public class DefaultTimeBar extends View implements TimeBar {
     keyTimeIncrement = C.TIME_UNSET;
     keyTimeIncrement = C.TIME_UNSET;
     keyCountIncrement = DEFAULT_INCREMENT_COUNT;
     keyCountIncrement = DEFAULT_INCREMENT_COUNT;
     setFocusable(true);
     setFocusable(true);
-    if (Util.SDK_INT >= 16
-        && getImportantForAccessibility() == View.IMPORTANT_FOR_ACCESSIBILITY_AUTO) {
-      setImportantForAccessibility(View.IMPORTANT_FOR_ACCESSIBILITY_YES);
+    if (Util.SDK_INT >= 16) {
+      maybeSetImportantForAccessibilityV16();
     }
     }
   }
   }
 
 
@@ -372,7 +371,7 @@ public class DefaultTimeBar extends View implements TimeBar {
     event.setClassName(DefaultTimeBar.class.getName());
     event.setClassName(DefaultTimeBar.class.getName());
   }
   }
 
 
-  @TargetApi(14)
+  @TargetApi(21)
   @Override
   @Override
   public void onInitializeAccessibilityNodeInfo(AccessibilityNodeInfo info) {
   public void onInitializeAccessibilityNodeInfo(AccessibilityNodeInfo info) {
     super.onInitializeAccessibilityNodeInfo(info);
     super.onInitializeAccessibilityNodeInfo(info);
@@ -416,6 +415,13 @@ public class DefaultTimeBar extends View implements TimeBar {
 
 
   // Internal methods.
   // Internal methods.
 
 
+  @TargetApi(16)
+  private void maybeSetImportantForAccessibilityV16() {
+    if (getImportantForAccessibility() == View.IMPORTANT_FOR_ACCESSIBILITY_AUTO) {
+      setImportantForAccessibility(View.IMPORTANT_FOR_ACCESSIBILITY_YES);
+    }
+  }
+
   private void startScrubbing() {
   private void startScrubbing() {
     scrubbing = true;
     scrubbing = true;
     updateScrubberState();
     updateScrubberState();