Fix receiving H264 video from iPhone on Kitkat devices.

webrtc/api/android/jni/androidmediacodeccommon.h

Index: webrtc/api/android/jni/androidmediacodeccommon.h
diff --git a/webrtc/api/android/jni/androidmediacodeccommon.h b/webrtc/api/android/jni/androidmediacodeccommon.h
index 528e166f937d88077b165ccf2b5e9e6bbde3788a..a7c5eaa03d920973e75ac1e57958b4f7ba11fc98 100644
--- a/webrtc/api/android/jni/androidmediacodeccommon.h
+++ b/webrtc/api/android/jni/androidmediacodeccommon.h
@@ -59,7 +59,7 @@ enum { kMaxPendingFramesVp8 = 1 };
 // Maximum amount of pending frames for VP9 decoder.
 enum { kMaxPendingFramesVp9 = 1 };
 // Maximum amount of pending frames for H.264 decoder.
-enum { kMaxPendingFramesH264 = 3 };
+enum { kMaxPendingFramesH264 = 4 };
 // Maximum amount of decoded frames for which per-frame logging is enabled.
 enum { kMaxDecodedLogFrames = 10 };
 // Maximum amount of encoded frames for which per-frame logging is enabled.