Adds link disambiguation popup support to Windows.

content/public/browser/web_contents_view_delegate.h

Index: content/public/browser/web_contents_view_delegate.h
diff --git a/content/public/browser/web_contents_view_delegate.h b/content/public/browser/web_contents_view_delegate.h
index b0e3f6255b90fd9be86762263706cd7b71a78a56..27cc0945f3c121dd259e1917becb03d1a833f044 100644
--- a/content/public/browser/web_contents_view_delegate.h
+++ b/content/public/browser/web_contents_view_delegate.h
@@ -9,7 +9,9 @@
 #import <Cocoa/Cocoa.h>
 #endif
 
+#include "base/callback_forward.h"
 #include "content/common/content_export.h"
+#include "ui/gfx/geometry/rect.h"
 #include "ui/gfx/native_widget_types.h"
 
 #if defined(OS_MACOSX)
@@ -22,6 +24,7 @@ class Size;
 
 namespace ui {
 class FocusStoreGtk;
+class GestureEvent;
 }
 
 namespace content {
@@ -34,6 +37,8 @@ struct ContextMenuParams;
 // WebContentsView implementation.
 class CONTENT_EXPORT WebContentsViewDelegate {
  public:
+  typedef base::Callback<void(ui::GestureEvent* event)> GestureCallback;
+
   virtual ~WebContentsViewDelegate() {}
 
   // Returns a delegate to process drags not handled by content.
@@ -43,6 +48,11 @@ class CONTENT_EXPORT WebContentsViewDelegate {
   virtual void ShowContextMenu(RenderFrameHost* render_frame_host,
                                const ContextMenuParams& params) = 0;
 
+  virtual void ShowLinkDisambiguationPopup(const gfx::Rect& target_rect,
+                                           const SkBitmap& zoomed_bitmap,
+                                           const gfx::NativeView content,
+                                           GestureCallback callback) = 0;
+
 #if defined(USE_AURA)
   // These methods allow the embedder to intercept WebContentsViewWin's
   // implementation of these WebContentsView methods. See the WebContentsView