Add some break statements in spdy_protocol for clarity.

net/spdy/spdy_protocol.cc

 // Copyright (c) 2012 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #include "net/spdy/spdy_protocol.h"
 
 namespace net {
 
 SpdyFrameWithNameValueBlockIR::SpdyFrameWithNameValueBlockIR(
     SpdyStreamId stream_id) : SpdyFrameWithFinIR(stream_id) {}
@@ skipping 68 matching lines @@
           return SETTINGS;
         case 6:
           return PING;
         case 7:
           return GOAWAY;
         case 8:
           return HEADERS;
         case 9:
           return WINDOW_UPDATE;
       }
+      break;
     case SPDY4:
       switch (frame_type_field) {
         case 0:
           return DATA;
         case 1:
           return HEADERS;
         // TODO(hkhalil): Add PRIORITY.
         case 3:
           return RST_STREAM;
         case 4:
           return SETTINGS;
         case 5:
           return PUSH_PROMISE;
         case 6:
           return PING;
         case 7:
           return GOAWAY;
         case 8:
           return WINDOW_UPDATE;
         case 9:
           return CONTINUATION;
         case 10:
           return BLOCKED;
       }
+      break;
   }
 
   LOG(DFATAL) << "Unhandled frame type " << frame_type_field;
   return DATA;
 }
 
 int SpdyConstants::SerializeFrameType(SpdyMajorVersion version,
                                       SpdyFrameType frame_type) {
   switch (version) {
     case SPDY2:
@@ skipping 121 matching lines @@
 
 void SpdyPushPromiseIR::Visit(SpdyFrameVisitor* visitor) const {
   return visitor->VisitPushPromise(*this);
 }
 
 void SpdyContinuationIR::Visit(SpdyFrameVisitor* visitor) const {
   return visitor->VisitContinuation(*this);
 }
 
 }  // namespace net