Add multiline braille support.

chrome/browser/extensions/api/braille_display_private/brlapi_connection.h

Index: chrome/browser/extensions/api/braille_display_private/brlapi_connection.h
diff --git a/chrome/browser/extensions/api/braille_display_private/brlapi_connection.h b/chrome/browser/extensions/api/braille_display_private/brlapi_connection.h
index f1cba434098d37b7267a65725e33bfde7c0cf905..bf6cc333fc6e8a6b98a70b4c05f59df7beb63d70 100644
--- a/chrome/browser/extensions/api/braille_display_private/brlapi_connection.h
+++ b/chrome/browser/extensions/api/braille_display_private/brlapi_connection.h
@@ -8,6 +8,7 @@
 #include <stddef.h>
 
 #include <memory>
+#include <vector>
 
 #include "base/callback_forward.h"
 #include "base/macros.h"
@@ -53,11 +54,13 @@ class BrlapiConnection {
   // Gets the total size of the display, which may be 0 if no display is

[dmazzoni, 2016/10/11 17:15:39]

Update this comment

[ultimatedbz, 2016/10/16 01:12:39]

Done.

   // present, returning true on success.  Note that this is cached in the
   // brlapi client so it is cheap.
-  virtual bool GetDisplaySize(size_t* size) = 0;
+  virtual bool GetDisplaySize(unsigned int* rows, unsigned int* columns) = 0;
 
   // Sends the specified cells to the display.  The array size must

[dmazzoni, 2016/10/11 17:15:39]

Update the comment

[ultimatedbz, 2016/10/16 01:12:39]

Done.

   // be equal to what GetDisplaySize() last returned for this connection.
-  virtual bool WriteDots(const unsigned char* cells) = 0;
+//  virtual bool WriteDots(const std::vector<unsigned char> cells) = 0;

[dmazzoni, 2016/10/11 17:15:39]

Delete the old commented-out line

[ultimatedbz, 2016/10/16 01:12:39]

Done.

+  virtual bool WriteDots(
+      const std::vector<std::vector<unsigned char>> cells) = 0;
 
   // Reads the next keyboard command, returning true on success.
   // Returns < 0 on error, 0 if no more keys are pending and > 0