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

net/spdy/spdy_read_queue_unittest.cc

Index: net/spdy/spdy_read_queue_unittest.cc
diff --git a/net/spdy/spdy_read_queue_unittest.cc b/net/spdy/spdy_read_queue_unittest.cc
index a211af11a91d135099846a036229dc5e18bf9954..935694b7b85ddb43983754595c1263b3956cb7c5 100644
--- a/net/spdy/spdy_read_queue_unittest.cc
+++ b/net/spdy/spdy_read_queue_unittest.cc
@@ -7,11 +7,11 @@
 #include <algorithm>
 #include <cstddef>
 #include <memory>
-#include <string>
 
 #include "base/bind.h"
 #include "base/memory/ptr_util.h"
 #include "base/stl_util.h"
+#include "net/spdy/platform/api/spdy_string.h"
 #include "net/spdy/spdy_buffer.h"
 #include "testing/gtest/include/gtest/gtest.h"
 
@@ -24,7 +24,7 @@ const size_t kDataSize = arraysize(kData);
 
 // Enqueues |data| onto |queue| in chunks of at most |max_buffer_size|
 // bytes.
-void EnqueueString(const std::string& data,
+void EnqueueString(const SpdyString& data,
                    size_t max_buffer_size,
                    SpdyReadQueue* queue) {
   ASSERT_GT(data.size(), 0u);
@@ -42,8 +42,8 @@ void EnqueueString(const std::string& data,
 
 // Dequeues all bytes in |queue| in chunks of at most
 // |max_buffer_size| bytes and returns the data as a string.
-std::string DrainToString(size_t max_buffer_size, SpdyReadQueue* queue) {
-  std::string data;
+SpdyString DrainToString(size_t max_buffer_size, SpdyReadQueue* queue) {
+  SpdyString data;
 
   // Pad the buffer so we can detect out-of-bound writes.
   size_t padding = std::max(static_cast<size_t>(4096), queue->GetTotalSize());
@@ -78,10 +78,10 @@ std::string DrainToString(size_t max_buffer_size, SpdyReadQueue* queue) {
 // sizes.
 void RunEnqueueDequeueTest(size_t enqueue_max_buffer_size,
                            size_t dequeue_max_buffer_size) {
-  std::string data(kData, kDataSize);
+  SpdyString data(kData, kDataSize);
   SpdyReadQueue read_queue;
   EnqueueString(data, enqueue_max_buffer_size, &read_queue);
-  const std::string& drained_data =
+  const SpdyString& drained_data =
       DrainToString(dequeue_max_buffer_size, &read_queue);
   EXPECT_EQ(data, drained_data);
 }