Simplify CombineFrames() interface.

net/spdy/chromium/spdy_test_util_common.h

Index: net/spdy/chromium/spdy_test_util_common.h
diff --git a/net/spdy/chromium/spdy_test_util_common.h b/net/spdy/chromium/spdy_test_util_common.h
index be5f42945c89cdf1a9772faf5813eefa4c9291c5..88ef88acf156e41104df142dc190b1034303ec6d 100644
--- a/net/spdy/chromium/spdy_test_util_common.h
+++ b/net/spdy/chromium/spdy_test_util_common.h
@@ -92,10 +92,8 @@ MockRead CreateMockRead(const SpdySerializedFrame& resp, int seq, IoMode mode);
 
 // Combines the given SpdySerializedFrame into the given char array and returns
 // the total length.

[Zhongyi Shi, 2017/06/12 19:34:12]

Could you update the comments since the return type is no longer the total
length?

[Bence, 2017/06/12 19:49:13]

Oops, sorry about that.  Good catch!

-int CombineFrames(const SpdySerializedFrame** frames,
-                  int num_frames,
-                  char* buf,
-                  int buf_len);
+SpdySerializedFrame CombineFrames(
+    std::vector<const SpdySerializedFrame*> frames);
 
 // Returns the SpdyPriority embedded in the given frame.  Returns true
 // and fills in |priority| on success.