Add SetImageData api to chrome.clipboard.

chrome/browser/extensions/api/chrome_extensions_api_client.cc

Index: chrome/browser/extensions/api/chrome_extensions_api_client.cc
diff --git a/chrome/browser/extensions/api/chrome_extensions_api_client.cc b/chrome/browser/extensions/api/chrome_extensions_api_client.cc
index d65c7b41f03bba7374b7879f714b53298c1789aa..b05a4df2de5717f5eb17ae263fd3ffff3ee322d5 100644
--- a/chrome/browser/extensions/api/chrome_extensions_api_client.cc
+++ b/chrome/browser/extensions/api/chrome_extensions_api_client.cc
@@ -36,6 +36,7 @@
 
 #if defined(OS_CHROMEOS)
 #include "chrome/browser/extensions/api/virtual_keyboard_private/chrome_virtual_keyboard_delegate.h"
+#include "chrome/browser/extensions/clipboard_extension_helper_chromeos.h"
 #endif
 
 #if BUILDFLAG(ENABLE_PRINTING)
@@ -166,4 +167,17 @@ MetricsPrivateDelegate* ChromeExtensionsAPIClient::GetMetricsPrivateDelegate() {
   return metrics_private_delegate_.get();
 }
 
+#if defined(OS_CHROMEOS)
+void ChromeExtensionsAPIClient::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) {
+  if (!clipboard_extension_helper_)
+    clipboard_extension_helper_ = base::MakeUnique<ClipboardExtensionHelper>();
+  clipboard_extension_helper_->DecodeAndSaveImageData(
+      image_data, type, success_callback, error_callback);
+}
+#endif
+
 }  // namespace extensions