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..8d0d759e7b074ac15f1366476f471d6af3391167 100644
--- a/extensions/browser/api/clipboard/clipboard_api.h
+++ b/extensions/browser/api/clipboard/clipboard_api.h
@@ -7,10 +7,13 @@
 
 #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 {
 
+namespace clipboard = api::clipboard;

[Devlin, 2016/12/09 15:23:53]

See comment here. 
https://codereview.chromium.org/2379573008/diff/100001/chrome/browser/extensi...

Note: Often reviewers will mention a general comment once, and it should be
applied to all files in a patch set.  This helps us avoid having a patch where
we have a bunch of comments addressing the same issue. :)

[jennyz, 2016/12/14 01:15:36]

Done.

+
 class ClipboardAPI : public BrowserContextKeyedAPI,
                      public ui::ClipboardObserver {
  public:
@@ -32,6 +35,20 @@ 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 SaveImageData(const std::vector<char>& image_data,
+                     clipboard::ImageType type);
+  void OnSaveImageDataSuccess();
+  void OnSaveImageDataError();
+};
+
 }  // namespace extensions
 
 #endif  // EXTENSIONS_BROWSER_API_CLIPBOARD_CLIPBOARD_API_H_