Remove some uses of isdigit in net/, as it can be locale depedent.

net/quic/core/quic_spdy_stream_test.cc

 // Copyright 2013 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/quic/core/quic_spdy_stream.h"
 
 #include <memory>
 #include <utility>
 
 #include "base/memory/ptr_util.h"
@@ skipping 161 matching lines @@
   EXPECT_FALSE(stream_->IsDoneReading());
   EXPECT_TRUE(stream_->HasFinalReceivedByteOffset());
 }
 
 TEST_P(QuicSpdyStreamTest, ParseHeaderStatusCode) {
   // A valid status code should be 3-digit integer. The first digit should be in
   // the range of [1, 5]. All the others are invalid.
   Initialize(kShouldProcessData);
   int status_code = 0;
 
-  // Valid status code.
+  // Valid status codes.
   headers_[":status"] = "404";
   EXPECT_TRUE(stream_->ParseHeaderStatusCode(headers_, &status_code));
   EXPECT_EQ(404, status_code);
 
+  headers_[":status"] = "100";
+  EXPECT_TRUE(stream_->ParseHeaderStatusCode(headers_, &status_code));
+  EXPECT_EQ(100, status_code);
+
+  headers_[":status"] = "599";
+  EXPECT_TRUE(stream_->ParseHeaderStatusCode(headers_, &status_code));
+  EXPECT_EQ(599, status_code);
+
   // Invalid status codes.
   headers_[":status"] = "010";
   EXPECT_FALSE(stream_->ParseHeaderStatusCode(headers_, &status_code));
 
   headers_[":status"] = "600";
   EXPECT_FALSE(stream_->ParseHeaderStatusCode(headers_, &status_code));
 
   headers_[":status"] = "200 ok";
   EXPECT_FALSE(stream_->ParseHeaderStatusCode(headers_, &status_code));
 
   headers_[":status"] = "2000";
   EXPECT_FALSE(stream_->ParseHeaderStatusCode(headers_, &status_code));
 
   headers_[":status"] = "+200";
   EXPECT_FALSE(stream_->ParseHeaderStatusCode(headers_, &status_code));
 
   headers_[":status"] = "+20";
   EXPECT_FALSE(stream_->ParseHeaderStatusCode(headers_, &status_code));
 
+  headers_[":status"] = "-10";
+  EXPECT_FALSE(stream_->ParseHeaderStatusCode(headers_, &status_code));
+
+  headers_[":status"] = "-100";
+  EXPECT_FALSE(stream_->ParseHeaderStatusCode(headers_, &status_code));
+
   // Leading or trailing spaces are also invalid.
   headers_[":status"] = " 200";
   EXPECT_FALSE(stream_->ParseHeaderStatusCode(headers_, &status_code));
 
   headers_[":status"] = "200 ";
   EXPECT_FALSE(stream_->ParseHeaderStatusCode(headers_, &status_code));
 
   headers_[":status"] = " 200 ";
   EXPECT_FALSE(stream_->ParseHeaderStatusCode(headers_, &status_code));
 
@@ skipping 709 matching lines @@
 
   // Writing Trailers should fail, as the FIN has already been sent.
   // populated with the number of body bytes written.
   EXPECT_QUIC_BUG(stream_->WriteTrailers(SpdyHeaderBlock(), nullptr),
                   "Trailers cannot be sent after a FIN");
 }
 
 }  // namespace
 }  // namespace test
 }  // namespace net