Convert //chrome/browser/chromeos from scoped_ptr to std::unique_ptr

chrome/browser/chromeos/file_system_provider/operations/read_file.cc

Index: chrome/browser/chromeos/file_system_provider/operations/read_file.cc
diff --git a/chrome/browser/chromeos/file_system_provider/operations/read_file.cc b/chrome/browser/chromeos/file_system_provider/operations/read_file.cc
index 520f9401ac5fdf2e0c5bb968c7df967a9e499469..9a7ef0bb8f004620c073507b609e46df59738c3d 100644
--- a/chrome/browser/chromeos/file_system_provider/operations/read_file.cc
+++ b/chrome/browser/chromeos/file_system_provider/operations/read_file.cc
@@ -21,7 +21,7 @@ namespace {
 
 // Convert |value| into |output|. If parsing fails, then returns a negative
 // value. Otherwise returns number of bytes written to the buffer.
-int CopyRequestValueToBuffer(scoped_ptr<RequestValue> value,
+int CopyRequestValueToBuffer(std::unique_ptr<RequestValue> value,
                              scoped_refptr<net::IOBuffer> buffer,
                              int buffer_offset,
                              int buffer_length) {
@@ -84,7 +84,7 @@ bool ReadFile::Execute(int request_id) {
 }
 
 void ReadFile::OnSuccess(int /* request_id */,
-                         scoped_ptr<RequestValue> result,
+                         std::unique_ptr<RequestValue> result,
                          bool has_more) {
   TRACE_EVENT0("file_system_provider", "ReadFile::OnSuccess");
   const int copy_result = CopyRequestValueToBuffer(std::move(result), buffer_,
@@ -103,7 +103,7 @@ void ReadFile::OnSuccess(int /* request_id */,
 }
 
 void ReadFile::OnError(int /* request_id */,
-                       scoped_ptr<RequestValue> /* result */,
+                       std::unique_ptr<RequestValue> /* result */,
                        base::File::Error error) {
   TRACE_EVENT0("file_system_provider", "ReadFile::OnError");
   callback_.Run(0 /* chunk_length */, false /* has_more */, error);