In-class-initialize LIMITED_MEDIA_LOG log counters

media/filters/frame_processor.h

Index: media/filters/frame_processor.h
diff --git a/media/filters/frame_processor.h b/media/filters/frame_processor.h
index ba7f23d1b106c058a03b96e0ac9e40e31667f511..fc6de696543df7a9d74ffc9ce6daa78cfd198fbd 100644
--- a/media/filters/frame_processor.h
+++ b/media/filters/frame_processor.h
@@ -153,7 +153,7 @@ class MEDIA_EXPORT FrameProcessor {
   // Per http://www.w3.org/TR/media-source/#widl-SourceBuffer-mode:
   // Controls how a sequence of media segments are handled. This is initially
   // set to false ("segments").
-  bool sequence_mode_;
+  bool sequence_mode_ = false;
 
   // Tracks the MSE coded frame processing variable of same name.
   // Initially kNoTimestamp(), meaning "unset".
@@ -171,8 +171,8 @@ class MEDIA_EXPORT FrameProcessor {
   scoped_refptr<MediaLog> media_log_;
 
   // Counters that limit spam to |media_log_| for frame processor warnings.
-  int num_dropped_preroll_warnings_;
-  int num_dts_beyond_pts_warnings_;
+  int num_dropped_preroll_warnings_ = 0;
+  int num_dts_beyond_pts_warnings_ = 0;
 
   DISALLOW_COPY_AND_ASSIGN(FrameProcessor);
 };