H264Decoder: Handle gaps in frame_num.

content/common/gpu/media/h264_dpb.cc

Index: content/common/gpu/media/h264_dpb.cc
diff --git a/content/common/gpu/media/h264_dpb.cc b/content/common/gpu/media/h264_dpb.cc
index 1220d591fc545d04e9bbc634d4d29e94346066cf..0bc32e800ed1ad993e16cdb49fbe93124fe77060 100644
--- a/content/common/gpu/media/h264_dpb.cc
+++ b/content/common/gpu/media/h264_dpb.cc
@@ -11,11 +11,15 @@
 namespace content {
 
 H264Picture::H264Picture()
-    : top_field_order_cnt(0),
+    : pic_order_cnt_type(0),
+      top_field_order_cnt(0),
       bottom_field_order_cnt(0),
       pic_order_cnt(0),
       pic_order_cnt_msb(0),
       pic_order_cnt_lsb(0),
+      delta_pic_order_cnt_bottom(0),
+      delta_pic_order_cnt0(0),
+      delta_pic_order_cnt1(0),
       pic_num(0),
       long_term_pic_num(0),
       frame_num(0),
@@ -23,11 +27,14 @@ H264Picture::H264Picture()
       frame_num_wrap(0),
       long_term_frame_idx(0),
       type(media::H264SliceHeader::kPSlice),
+      nal_ref_idc(0),
       idr(false),
+      idr_pic_id(0),
       ref(false),
       long_term(false),
       outputted(false),
       mem_mgmt_5(false),
+      nonexisting(false),
       field(FIELD_NONE),
       long_term_reference_flag(false),
       adaptive_ref_pic_marking_mode_flag(false),