net: FileStream::Read/Write() to take IOBuffer* instead of char*

net/base/mock_file_stream.cc

Index: net/base/mock_file_stream.cc
diff --git a/net/base/mock_file_stream.cc b/net/base/mock_file_stream.cc
index e87491f656362303e1da9909c3f347143bc56266..419f65fcca2b37b41892030509f1d2657b50f5ab 100644
--- a/net/base/mock_file_stream.cc
+++ b/net/base/mock_file_stream.cc
@@ -21,7 +21,7 @@ int64 MockFileStream::Available() {
   return ReturnError64(FileStream::Available());
 }
 
-int MockFileStream::Read(char* buf,
+int MockFileStream::Read(IOBuffer* buf,
                          int buf_len,
                          const CompletionCallback& callback) {
   return ReturnError(FileStream::Read(buf, buf_len, callback));
@@ -35,7 +35,7 @@ int MockFileStream::ReadUntilComplete(char *buf, int buf_len) {
   return ReturnError(FileStream::ReadUntilComplete(buf, buf_len));
 }
 
-int MockFileStream::Write(const char* buf,
+int MockFileStream::Write(IOBuffer* buf,
                           int buf_len,
                           const CompletionCallback& callback) {
   return ReturnError(FileStream::Write(buf, buf_len, callback));