Add SpdyString alias for std::string in net/spdy.

net/spdy/hpack/hpack_entry_test.cc

 // Copyright 2014 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/hpack/hpack_entry.h"
 
-#include <string>
-
 #include "testing/gtest/include/gtest/gtest.h"
 
 namespace net {
 
 namespace {
 
-using std::string;
-
 class HpackEntryTest : public ::testing::Test {
  protected:
   HpackEntryTest()
       : name_("header-name"),
         value_("header value"),
         total_insertions_(0),
         table_size_(0) {}
 
   // These builders maintain the same external table invariants that a "real"
   // table (ie HpackHeaderTable) would.
@@ skipping 12 matching lines @@
       return 1 + entry.InsertionIndex() + table_size_;
     } else {
       return total_insertions_ - entry.InsertionIndex();
     }
   }
 
   size_t Size() {
     return name_.size() + value_.size() + HpackEntry::kSizeOverhead;
   }
 
-  string name_, value_;
+  SpdyString name_, value_;
 
  private:
   // Referenced by HpackEntry instances.
   size_t total_insertions_;
   size_t table_size_;
 };
 
 TEST_F(HpackEntryTest, StaticConstructor) {
   HpackEntry entry(StaticEntry());
 
@@ skipping 57 matching lines @@
 
   EXPECT_EQ(1u, IndexOf(dynamic3));
   EXPECT_EQ(2u, IndexOf(dynamic2));
   EXPECT_EQ(3u, IndexOf(static1));
   EXPECT_EQ(4u, IndexOf(static2));
 }
 
 }  // namespace
 
 }  // namespace net