Drag-and-drop: Move startDrag out of WebView/RenderView.

components/test_runner/web_widget_test_client.cc

Index: components/test_runner/web_widget_test_client.cc
diff --git a/components/test_runner/web_widget_test_client.cc b/components/test_runner/web_widget_test_client.cc
index add8afdd0ffb75a1e7dc840e6968323ddf82838c..8bb1106502b50800268cde9282db8a7e8e5a7e29 100644
--- a/components/test_runner/web_widget_test_client.cc
+++ b/components/test_runner/web_widget_test_client.cc
@@ -8,6 +8,7 @@
 #include "base/bind_helpers.h"
 #include "base/logging.h"
 #include "base/time/time.h"
+#include "components/test_runner/event_sender.h"
 #include "components/test_runner/mock_screen_orientation_client.h"
 #include "components/test_runner/test_interfaces.h"
 #include "components/test_runner/test_runner.h"
@@ -102,6 +103,19 @@ void WebWidgetTestClient::resetInputMethod() {
         blink::WebWidget::KeepSelection);
 }
 
+void WebWidgetTestClient::startDragging(blink::WebReferrerPolicy policy,
+                                        const blink::WebDragData& data,
+                                        blink::WebDragOperationsMask mask,
+                                        const blink::WebImage& image,
+                                        const blink::WebPoint& point) {
+  test_runner()->setDragImage(image);
+
+  // When running a test, we need to fake a drag drop operation otherwise
+  // Windows waits for real mouse events to know when the drag is over.
+  web_widget_test_proxy_base_->event_sender()->DoDragDrop(data, mask);
+}
+
+
 TestRunnerForSpecificView* WebWidgetTestClient::view_test_runner() {
   return web_widget_test_proxy_base_->web_view_test_proxy_base()
       ->view_test_runner();