[Mac] Fix "No drag (+) cursor displayed when dragging link over BMB"

chrome/browser/ui/cocoa/bookmarks/bookmark_bar_view_unittest.mm

Index: chrome/browser/ui/cocoa/bookmarks/bookmark_bar_view_unittest.mm
===================================================================
--- chrome/browser/ui/cocoa/bookmarks/bookmark_bar_view_unittest.mm	(revision 86655)
+++ chrome/browser/ui/cocoa/bookmarks/bookmark_bar_view_unittest.mm	(working copy)
@@ -27,6 +27,7 @@
   BOOL draggingEnteredCalled_;
   // Only mock one type of drag data at a time.
   NSString* dragDataType_;
+  id draggingSource_;
 }
 @property (nonatomic) BOOL dropIndicatorShown;
 @property (nonatomic) BOOL draggingEnteredCalled;
@@ -59,8 +60,13 @@
   dragBookmarkDataPong_ = NO;
   dropIndicatorShown_ = YES;
   draggingEnteredCalled_ = NO;
+  draggingSource_ = self;
 }
 
+- (void)setDraggingSource:(id)draggingSource {
+  draggingSource_ = draggingSource;
+}
+
 // NSDragInfo mocking functions.
 
 - (id)draggingPasteboard {
@@ -69,7 +75,7 @@
 
 // So we can look local.
 - (id)draggingSource {
-  return self;
+  return draggingSource_;
 }
 
 - (NSDragOperation)draggingSourceOperationMask {
@@ -182,6 +188,8 @@
   [view_ setController:info.get()];
   [info reset];
 
+  scoped_nsobject<BookmarkButton> dragged_button([[BookmarkButton alloc] init]);
+  [info setDraggingSource:dragged_button.get()];
   [info setDragDataType:kBookmarkButtonDragType];
   EXPECT_EQ([view_ draggingEntered:(id)info.get()], NSDragOperationMove);
   EXPECT_TRUE([view_ performDragOperation:(id)info.get()]);
@@ -199,7 +207,7 @@
   NSArray* dragTypes = [URLDropTargetHandler handledDragTypes];
   for (NSString* type in dragTypes) {
     [info setDragDataType:type];
-    EXPECT_EQ([view_ draggingEntered:(id)info.get()], NSDragOperationMove);
+    EXPECT_EQ([view_ draggingEntered:(id)info.get()], NSDragOperationCopy);
     EXPECT_TRUE([view_ performDragOperation:(id)info.get()]);
     EXPECT_FALSE([info dragButtonToPong]);
     EXPECT_TRUE([info dragURLsPong]);
@@ -212,8 +220,10 @@
   scoped_nsobject<FakeBookmarkDraggingInfo>
       info([[FakeBookmarkDraggingInfo alloc] init]);
   [view_ setController:info.get()];
+  [info reset];
 
-  [info reset];
+  scoped_nsobject<BookmarkButton> dragged_button([[BookmarkButton alloc] init]);
+  [info setDraggingSource:dragged_button.get()];
   [info setDragDataType:kBookmarkButtonDragType];
   EXPECT_FALSE([info draggingEnteredCalled]);
   EXPECT_EQ([view_ draggingEntered:(id)info.get()], NSDragOperationMove);