Android: Add FramerateRange class

webrtc/api/java/android/org/webrtc/CameraEnumerator.java

Index: webrtc/api/java/android/org/webrtc/CameraEnumerator.java
diff --git a/webrtc/api/java/android/org/webrtc/CameraEnumerator.java b/webrtc/api/java/android/org/webrtc/CameraEnumerator.java
index 59a7847f8548ff1e528fbe65a50d6a67fcc0edd6..04edba83790c259d74c7565f62b4676be08b25f3 100644
--- a/webrtc/api/java/android/org/webrtc/CameraEnumerator.java
+++ b/webrtc/api/java/android/org/webrtc/CameraEnumerator.java
@@ -81,4 +81,16 @@ public class CameraEnumerator implements CameraEnumerationAndroid.Enumerator {
         + " Time spent: " + (endTimeMs - startTimeMs) + " ms.");
     return formatList;
   }
+
+  // Convert from int[2] to CaptureFormat.FramerateRange.
+  public static List<CaptureFormat.FramerateRange> convertFramerates(
+      List<int[]> arrayRanges) {
+    final List<CaptureFormat.FramerateRange> ranges = new ArrayList<CaptureFormat.FramerateRange>();
+    for (int[] range : arrayRanges) {
+      ranges.add(new CaptureFormat.FramerateRange(
+          range[android.hardware.Camera.Parameters.PREVIEW_FPS_MIN_INDEX],
+          range[android.hardware.Camera.Parameters.PREVIEW_FPS_MAX_INDEX]));
+    }
+    return ranges;
+  }
 }