Revert 34998, more stabbing in the dark to find a perf regression - Mac: impl...

chrome/browser/cocoa/url_drop_target.mm

Index: chrome/browser/cocoa/url_drop_target.mm
===================================================================
--- chrome/browser/cocoa/url_drop_target.mm	(revision 35037)
+++ chrome/browser/cocoa/url_drop_target.mm	(working copy)
@@ -9,6 +9,9 @@
 
 @interface URLDropTargetHandler(Private)
 
+// Get the window controller.
+- (id<URLDropTargetWindowController>)windowController;
+
 // Gets the appropriate drag operation given the |NSDraggingInfo|.
 - (NSDragOperation)getDragOperation:(id<NSDraggingInfo>)sender;
 
@@ -44,8 +47,7 @@
   NSDragOperation dragOp = [self getDragOperation:sender];
   if (dragOp == NSDragOperationCopy) {
     // Just tell the window controller to update the indicator.
-    NSPoint hoverPoint = [view_ convertPointFromBase:[sender draggingLocation]];
-    [[view_ urlDropController] indicateDropURLsInView:view_ at:hoverPoint];
+    [[self windowController] indicateDropURLsAt:[sender draggingLocation]];
   }
   return dragOp;
 }
@@ -65,9 +67,7 @@
 
     if ([urls count]) {
       // Tell the window controller about the dropped URL(s).
-      NSPoint dropPoint =
-          [view_ convertPointFromBase:[sender draggingLocation]];
-      [[view_ urlDropController] dropURLs:urls inView:view_ at:dropPoint];
+      [[self windowController] dropURLs:urls at:[sender draggingLocation]];
       return YES;
     }
   }
@@ -79,13 +79,21 @@
 
 @implementation URLDropTargetHandler(Private)
 
+- (id<URLDropTargetWindowController>)windowController {
+  id<URLDropTargetWindowController> controller =
+      [[view_ window] windowController];
+  DCHECK([(id)controller conformsToProtocol:
+      @protocol(URLDropTargetWindowController)]);
+  return controller;
+}
+
 - (NSDragOperation)getDragOperation:(id<NSDraggingInfo>)sender {
   // Only allow the copy operation.
   return [sender draggingSourceOperationMask] & NSDragOperationCopy;
 }
 
 - (void)hideIndicator {
-  [[view_ urlDropController] hideDropURLsIndicatorInView:view_];
+  [[self windowController] hideDropURLsIndicator];
 }
 
 @end  // @implementation URLDropTargetHandler(Private)