Plumb event flags (shift/alt/ctrl modifiers) for drag/drop events to WebKit.

content/browser/web_contents/web_drag_dest_mac.mm

Index: content/browser/web_contents/web_drag_dest_mac.mm
diff --git a/content/browser/web_contents/web_drag_dest_mac.mm b/content/browser/web_contents/web_drag_dest_mac.mm
index dd945fcaf7187b7dc49b88c9339bc071029915fb..5fe64222145a1df2a17df5e06e47a01bd44d473f 100644
--- a/content/browser/web_contents/web_drag_dest_mac.mm
+++ b/content/browser/web_contents/web_drag_dest_mac.mm
@@ -111,7 +111,8 @@ using content::Referrer;
       *dropData_,
       gfx::Point(viewPoint.x, viewPoint.y),
       gfx::Point(screenPoint.x, screenPoint.y),
-      static_cast<WebDragOperationsMask>(mask));
+      static_cast<WebDragOperationsMask>(mask),
+      0 /* shift/ctrl/alt flags */);

[jam, 2012/05/15 16:57:53]

nit: personally, I'm not a fan of adding comments like this. if someone wants to
know what this does, they can quickly get to the header (in all files)

[varunjain, 2012/05/15 23:03:39]

Done.

 
   // We won't know the true operation (whether the drag is allowed) until we
   // hear back from the renderer. For now, be optimistic:
@@ -154,7 +155,8 @@ using content::Referrer;
   webContents_->GetRenderViewHost()->DragTargetDragOver(
       gfx::Point(viewPoint.x, viewPoint.y),
       gfx::Point(screenPoint.x, screenPoint.y),
-      static_cast<WebDragOperationsMask>(mask));
+      static_cast<WebDragOperationsMask>(mask),
+      0 /* shift/ctrl/alt flags */);
 
   if (delegate_)
     delegate_->OnDragOver();
@@ -194,7 +196,8 @@ using content::Referrer;
   NSPoint screenPoint = [self flipWindowPointToScreen:windowPoint view:view];
   webContents_->GetRenderViewHost()->DragTargetDrop(
       gfx::Point(viewPoint.x, viewPoint.y),
-      gfx::Point(screenPoint.x, screenPoint.y));
+      gfx::Point(screenPoint.x, screenPoint.y),
+      0 /* shift/ctrl/alt flags */);
 
   dropData_.reset();