Modify SetImageData to add additional items along with image data to save on clipboard.

chrome/browser/extensions/clipboard_extension_helper_chromeos.h

Index: chrome/browser/extensions/clipboard_extension_helper_chromeos.h
diff --git a/chrome/browser/extensions/clipboard_extension_helper_chromeos.h b/chrome/browser/extensions/clipboard_extension_helper_chromeos.h
index 78f6aebc949547077228e3d454d1c642ac1fe17c..a1b83f06dfe26ca67101d5591085bd3b968787a2 100644
--- a/chrome/browser/extensions/clipboard_extension_helper_chromeos.h
+++ b/chrome/browser/extensions/clipboard_extension_helper_chromeos.h
@@ -9,6 +9,7 @@
 #include <vector>
 
 #include "base/callback.h"
+#include "extensions/browser/api/clipboard/clipboard_api.h"
 #include "extensions/common/api/clipboard.h"
 
 class SkBitmap;
@@ -19,6 +20,10 @@ namespace extensions {
 // clipboard, called from clipboard extension API.
 class ClipboardExtensionHelper {
  public:
+  struct AdditionalDataItem {

[Devlin, 2017/04/26 18:20:15]

How is this different from the generated type?

[jennyz, 2017/05/16 18:22:03]

Not really, so removed this struct, just use the generated type.

+    std::string type;
+    std::string data;
+  };
   ClipboardExtensionHelper();
   ~ClipboardExtensionHelper();
 
@@ -26,6 +31,7 @@ class ClipboardExtensionHelper {
   void DecodeAndSaveImageData(
       const std::vector<char>& data,
       api::clipboard::ImageType type,
+      const AdditionalDataItemList& additional_items,
       const base::Closure& success_callback,
       const base::Callback<void(const std::string&)>& error_callback);
 
@@ -43,6 +49,7 @@ class ClipboardExtensionHelper {
   std::unique_ptr<ClipboardImageDataDecoder> clipboard_image_data_decoder_;
   base::Closure image_save_success_callback_;
   base::Callback<void(const std::string&)> image_save_error_callback_;
+  std::vector<AdditionalDataItem> additonal_items_;
 
   DISALLOW_COPY_AND_ASSIGN(ClipboardExtensionHelper);
 };