Move WebDropData to content::DropData and split off conversion function.

content/public/browser/web_contents_view.h

Index: content/public/browser/web_contents_view.h
diff --git a/content/public/browser/web_contents_view.h b/content/public/browser/web_contents_view.h
index d6a483da48ec51cbc488121afa83063e58dc3bb9..7e91bfab57acae4bee85931e9d2d7724f344eb5b 100644
--- a/content/public/browser/web_contents_view.h
+++ b/content/public/browser/web_contents_view.h
@@ -14,9 +14,8 @@
 #include "ui/gfx/rect.h"
 #include "ui/gfx/size.h"
 
-struct WebDropData;
-
 namespace content {
+struct DropData;
 
 // The WebContentsView is an interface that is implemented by the platform-
 // dependent web contents views. The WebContents uses this interface to talk to
@@ -77,7 +76,7 @@ class CONTENT_EXPORT WebContentsView {
   virtual void RestoreFocus() = 0;
 
   // Returns the current drop data, if any.
-  virtual WebDropData* GetDropData() const = 0;
+  virtual DropData* GetDropData() const = 0;
 
   // Get the bounds of the View, relative to the parent.
   virtual gfx::Rect GetViewBounds() const = 0;