Add SetImageData api to chrome.clipboard.

extensions/browser/api/extensions_api_client.h

Index: extensions/browser/api/extensions_api_client.h
diff --git a/extensions/browser/api/extensions_api_client.h b/extensions/browser/api/extensions_api_client.h
index de6416729a5d14470215d3491916b462fdfd2a78..b9c5f8e2a667195152f6c8db92117ecea8e886be 100644
--- a/extensions/browser/api/extensions_api_client.h
+++ b/extensions/browser/api/extensions_api_client.h
@@ -11,6 +11,7 @@
 #include "base/memory/ref_counted.h"
 #include "extensions/browser/api/declarative_content/content_rules_registry.h"
 #include "extensions/browser/api/storage/settings_namespace.h"
+#include "extensions/common/api/clipboard.h"
 
 namespace base {
 template <class T>
@@ -130,6 +131,15 @@ class ExtensionsAPIClient {
   // MetricsPrivateAPI behavior.
   virtual MetricsPrivateDelegate* GetMetricsPrivateDelegate();
 
+#if defined(OS_CHROMEOS)
+  // Saves image data on clipboard.
+  virtual void SaveImageDataToClipboard(
+      const std::vector<char>& image_data,
+      api::clipboard::ImageType type,
+      const base::Closure& success_callback,
+      const base::Callback<void(const std::string&)>& error_callback);
+#endif
+
   // NOTE: If this interface gains too many methods (perhaps more than 20) it
   // should be split into one interface per API.
 };