Add SetImageData api to chrome.clipboard.

extensions/shell/browser/shell_extensions_browser_client.h

Index: extensions/shell/browser/shell_extensions_browser_client.h
diff --git a/extensions/shell/browser/shell_extensions_browser_client.h b/extensions/shell/browser/shell_extensions_browser_client.h
index 4b161f417f5de4fb3d428df1d23507c463e2a698..8711767d6557ec4f6ef2ba946768b7bd9dd43a8c 100644
--- a/extensions/shell/browser/shell_extensions_browser_client.h
+++ b/extensions/shell/browser/shell_extensions_browser_client.h
@@ -90,6 +90,10 @@ class ShellExtensionsBrowserClient : public ExtensionsBrowserClient {
   ExtensionCache* GetExtensionCache() override;
   bool IsBackgroundUpdateAllowed() override;
   bool IsMinBrowserVersionSupported(const std::string& min_version) override;
+  void SaveImageDataToClipboard(const std::vector<char>& image_data,
+                                clipboard::ImageType type,
+                                const base::Closure& success_callback,
+                                const base::Closure& error_callback) override;
   ExtensionWebContentsObserver* GetExtensionWebContentsObserver(
       content::WebContents* web_contents) override;
   ExtensionNavigationUIData* GetExtensionNavigationUIData(