Treat HTTP2 priority weight as zero-indexed.

net/spdy/spdy_framer_test.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 <algorithm>
 #include <iostream>
 #include <limits>
 
 #include "base/compiler_specific.h"
 #include "base/memory/scoped_ptr.h"
@@ skipping 5311 matching lines @@
   EXPECT_EQ("protocolid", visitor.test_altsvc_ir_.protocol_id());
   EXPECT_EQ("hostname", visitor.test_altsvc_ir_.host());
 }
 
 // Tests handling of PRIORITY frames.
 TEST_P(SpdyFramerTest, ReadPriority) {
   if (spdy_version_ <= SPDY3) {
     return;
   }
   SpdyFramer framer(spdy_version_);
-  SpdyPriorityIR priority(3, 1, 99, false);
+  SpdyPriorityIR priority(3, 1, 255, false);
   scoped_ptr<SpdySerializedFrame> frame(framer.SerializePriority(priority));
   testing::StrictMock<test::MockSpdyFramerVisitor> visitor;
   framer.set_visitor(&visitor);
-  EXPECT_CALL(visitor, OnPriority(3, 1, 99, false));
+  EXPECT_CALL(visitor, OnPriority(3, 1, 255, false));
   framer.ProcessInput(frame->data(), frame->size());
 
   EXPECT_EQ(SpdyFramer::SPDY_RESET, framer.state());
   EXPECT_EQ(SpdyFramer::SPDY_NO_ERROR, framer.error_code())
       << SpdyFramer::ErrorCodeToString(framer.error_code());
   // TODO(mlavan): once we actually maintain a priority tree,
   // check that state is adjusted correctly.
 }
 
 // Tests handling of PRIORITY frame with incorrect size.
@@ skipping 44 matching lines @@
   EXPECT_EQ(4u, framer.MapWeightToPriority(109));
   EXPECT_EQ(4u, framer.MapWeightToPriority(74));
   EXPECT_EQ(5u, framer.MapWeightToPriority(73));
   EXPECT_EQ(5u, framer.MapWeightToPriority(37));
   EXPECT_EQ(6u, framer.MapWeightToPriority(36));
   EXPECT_EQ(6u, framer.MapWeightToPriority(1));
   EXPECT_EQ(7u, framer.MapWeightToPriority(0));
 }
 
 }  // namespace net