Add SetImageData api to chrome.clipboard.

extensions/browser/api/clipboard/clipboard_api.h

Index: extensions/browser/api/clipboard/clipboard_api.h
diff --git a/extensions/browser/api/clipboard/clipboard_api.h b/extensions/browser/api/clipboard/clipboard_api.h
index 57d2a4c8cbb05209ab1498464d2bc468ad422d54..00be111d57453fe3e868f8e426d471bd97d4c702 100644
--- a/extensions/browser/api/clipboard/clipboard_api.h
+++ b/extensions/browser/api/clipboard/clipboard_api.h
@@ -7,6 +7,7 @@
 
 #include "extensions/browser/browser_context_keyed_api_factory.h"
 #include "extensions/browser/extension_function.h"
+#include "extensions/common/api/clipboard.h"
 #include "ui/base/clipboard/clipboard_observer.h"
 
 namespace extensions {
@@ -32,6 +33,18 @@ class ClipboardAPI : public BrowserContextKeyedAPI,
   content::BrowserContext* const browser_context_;
 };
 
+class ClipboardSetImageDataFunction : public UIThreadExtensionFunction {
+ public:
+  DECLARE_EXTENSION_FUNCTION("clipboard.setImageData", CLIPBOARD_SETIMAGEDATA);
+
+ protected:
+  ~ClipboardSetImageDataFunction() override;
+  ResponseAction Run() override;
+
+  void OnSaveImageDataSuccess();
+  void OnSaveImageDataError(const std::string& error);
+};
+
 }  // namespace extensions
 
 #endif  // EXTENSIONS_BROWSER_API_CLIPBOARD_CLIPBOARD_API_H_