Plumb edit commands to plugins

Source/WebKit/chromium/public/WebPlugin.h

Index: Source/WebKit/chromium/public/WebPlugin.h
diff --git a/Source/WebKit/chromium/public/WebPlugin.h b/Source/WebKit/chromium/public/WebPlugin.h
index c3dfa91f27b5d2d9452a17c5c862bcec03a53cef..3fa0660971127fb23cc923fd7cdf1bf897d3c294 100644
--- a/Source/WebKit/chromium/public/WebPlugin.h
+++ b/Source/WebKit/chromium/public/WebPlugin.h
@@ -71,6 +71,7 @@ public:
     // of the corresponding object element.
     virtual bool getFormValue(WebString&) { return false; }
     virtual bool supportsKeyboardFocus() const { return false; }
+    virtual bool supportsEditCommands() const { return false; }
 
     virtual bool canProcessDrag() const { return false; }
 
@@ -122,6 +123,7 @@ public:
     virtual WebString selectionAsMarkup() const { return WebString(); }
 
     virtual bool executeEditCommand(const WebString& name) { return false; }
+    virtual bool executeEditCommand(const WebString& name, const WebString& value) { return false; }
 
     // If the given position is over a link, returns the absolute url.
     // Otherwise an empty url is returned.