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

content/test/test_web_contents_view.cc

Index: content/test/test_web_contents_view.cc
diff --git a/content/test/test_web_contents_view.cc b/content/test/test_web_contents_view.cc
index 3578b0600a3841fc4e6f80c590623ab409b27989..1d6f7dbfcae828e9ffd7918ef4f08de1583c8a35 100644
--- a/content/test/test_web_contents_view.cc
+++ b/content/test/test_web_contents_view.cc
@@ -22,7 +22,7 @@ void TestWebContentsView::ShowPopupMenu(const gfx::Rect& bounds,
 }
 
 void TestWebContentsView::StartDragging(
-    const WebDropData& drop_data,
+    const DropData& drop_data,
     WebKit::WebDragOperationsMask allowed_ops,
     const gfx::ImageSkia& image,
     const gfx::Vector2d& image_offset,
@@ -72,7 +72,7 @@ void TestWebContentsView::StoreFocus() {
 void TestWebContentsView::RestoreFocus() {
 }
 
-WebDropData* TestWebContentsView::GetDropData() const {
+DropData* TestWebContentsView::GetDropData() const {
   return NULL;
 }