Avoid a string copy in URLRequestResourceBundleJob::GetData().

net/url_request/url_request_simple_job.cc

Index: net/url_request/url_request_simple_job.cc
diff --git a/net/url_request/url_request_simple_job.cc b/net/url_request/url_request_simple_job.cc
index b855932d577824997d390d3c32dd0661415f6737..3acc220f2242350d5db92e2ce38bd3fb9caec6fc 100644
--- a/net/url_request/url_request_simple_job.cc
+++ b/net/url_request/url_request_simple_job.cc
@@ -56,6 +56,24 @@ bool URLRequestSimpleJob::ReadRawData(IOBuffer* buf, int buf_size,
   return true;
 }
 
+int URLRequestSimpleJob::GetData(std::string* mime_type,
+                                 std::string* charset,
+                                 std::string* data,
+                                 const CompletionCallback& callback) const {
+  NOTREACHED();
+  return ERR_UNEXPECTED;
+}
+
+int URLRequestSimpleJob::GetStringPieceData(
+    std::string* mime_type,
+    std::string* charset,
+    base::StringPiece* data,
+    const CompletionCallback& callback) {
+  int result = GetData(mime_type, charset, &data_storage_, callback);
+  *data = data_storage_;
+  return result;
+}
+
 void URLRequestSimpleJob::StartAsync() {
   if (!request_)
     return;
@@ -82,11 +100,10 @@ void URLRequestSimpleJob::StartAsync() {
         FROM_HERE_WITH_EXPLICIT_FUNCTION(
             "422489 URLRequestSimpleJob::StartAsync 2"));
 
-    result = GetData(&mime_type_,
-                     &charset_,
-                     &data_,
-                     base::Bind(&URLRequestSimpleJob::OnGetDataCompleted,
-                                weak_factory_.GetWeakPtr()));
+    result =
+        GetStringPieceData(&mime_type_, &charset_, &data_,
+                           base::Bind(&URLRequestSimpleJob::OnGetDataCompleted,
+                                      weak_factory_.GetWeakPtr()));
   }
 
   if (result != ERR_IO_PENDING) {