Google OAuth Device Flow support for FNL

mojo/data_pipe_utils/data_pipe_utils.cc

Index: mojo/data_pipe_utils/data_pipe_utils.cc
diff --git a/mojo/data_pipe_utils/data_pipe_utils.cc b/mojo/data_pipe_utils/data_pipe_utils.cc
index af9f2062bd7c045a7d5d2c23faf7424aa0e4abc1..b05df9270dce28d6efb0c043bc81ec6884141db4 100644
--- a/mojo/data_pipe_utils/data_pipe_utils.cc
+++ b/mojo/data_pipe_utils/data_pipe_utils.cc
@@ -111,5 +111,19 @@ bool BlockingCopyFromString(const std::string& source,
   }
 }
 
+ScopedDataPipeConsumerHandle WriteStringToConsumerHandle(
+    const std::string& source) {
+  TRACE_EVENT0("data_pipe_utils", "WriteStringToConsumerHandle");
+  static const size_t max_buffer_size = 2 * 1024 * 1024;  // 2MB
+  DCHECK_LE(static_cast<uint32_t>(source.size()), max_buffer_size);

[viettrungluu, 2016/01/11 21:23:44]

Maybe make this a CHECK_LE instead of a DCHECK_LE (since it'll hang if it
fails)?

[ukode, 2016/02/09 00:20:17]

Done.

+  MojoCreateDataPipeOptions options = {
+      sizeof(MojoCreateDataPipeOptions),
+      MOJO_CREATE_DATA_PIPE_OPTIONS_FLAG_NONE, 1,
+      static_cast<uint32_t>(std::min(source.size(), max_buffer_size))};

[qsr, 2016/01/13 12:01:00]

once you change to a check, just use source.size()

[ukode, 2016/02/09 00:20:17]

Acknowledged.

+  DataPipe pipe(options);
+  BlockingCopyFromString(source, pipe.producer_handle.Pass());
+  return pipe.consumer_handle.Pass();
+}
+
 }  // namespace common
 }  // namespace mojo