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

content/browser/renderer_host/render_widget_host_delegate.cc

Index: content/browser/renderer_host/render_widget_host_delegate.cc
diff --git a/content/browser/renderer_host/render_widget_host_delegate.cc b/content/browser/renderer_host/render_widget_host_delegate.cc
index 662d50b9d2acb8d3accba3f7c71898ee699f35fb..09a546ab134d4932aa07854c2906209b61a26232 100644
--- a/content/browser/renderer_host/render_widget_host_delegate.cc
+++ b/content/browser/renderer_host/render_widget_host_delegate.cc
@@ -2,8 +2,10 @@
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
-#include "build/build_config.h"
 #include "content/browser/renderer_host/render_widget_host_delegate.h"
+
+#include "build/build_config.h"
+#include "content/browser/renderer_host/render_view_host_delegate_view.h"
 #include "ui/gfx/geometry/rect.h"
 
 namespace content {
@@ -72,4 +74,8 @@ bool RenderWidgetHostDelegate::IsHidden() {
   return false;
 }
 
+RenderViewHostDelegateView* RenderWidgetHostDelegate::GetDelegateView() {
+  return nullptr;
+}
+
 }  // namespace content