Add SetImageData api to chrome.clipboard.

extensions/browser/extensions_browser_client.h

Index: extensions/browser/extensions_browser_client.h
diff --git a/extensions/browser/extensions_browser_client.h b/extensions/browser/extensions_browser_client.h
index 5ddbde70f6bb7e88071e2e6b119ebeed6427e785..c69312df0131967244936311ecb595b449de8881 100644
--- a/extensions/browser/extensions_browser_client.h
+++ b/extensions/browser/extensions_browser_client.h
@@ -14,6 +14,7 @@
 #include "content/public/browser/bluetooth_chooser.h"
 #include "extensions/browser/extension_event_histogram_value.h"
 #include "extensions/browser/extension_prefs_observer.h"
+#include "extensions/common/api/clipboard.h"
 #include "extensions/common/view_type.h"
 
 class ExtensionFunctionRegistry;
@@ -107,6 +108,14 @@ class ExtensionsBrowserClient {
   // be extracted.
   virtual std::string GetUserIdHashFromContext(
       content::BrowserContext* context) = 0;
+
+  typedef base::Callback<void(const std::string&)> ErrorCallback;

[Devlin, 2016/12/16 02:26:16]

prefer "using" syntax in new code.  That said, for this, it might not be worth
the alias.

[jennyz, 2016/12/19 07:01:36]

Done.

+  // Saves image data on clipboard.
+  virtual void SaveImageDataToClipboard(
+      const std::vector<char>& image_data,
+      api::clipboard::ImageType type,
+      const base::Closure& success_callback,
+      const ErrorCallback& error_callback) = 0;
 #endif
 
   // Returns true if |context| corresponds to a guest session.