Fix context menu on download item....

chrome/browser/cocoa/download_item_cell.mm

Index: chrome/browser/cocoa/download_item_cell.mm
===================================================================
--- chrome/browser/cocoa/download_item_cell.mm	(revision 21201)
+++ chrome/browser/cocoa/download_item_cell.mm	(working copy)
@@ -182,7 +182,7 @@
   if ([theEvent trackingArea] == trackingAreaButton_.get())
     mousePosition_ = kDownloadItemMouseOverButtonPart;
   else if ([theEvent trackingArea] == trackingAreaDropdown_.get())
-    mousePosition_ = kDownloadItemMouseOverButtonPart;
+    mousePosition_ = kDownloadItemMouseOverDropdownPart;
   [[self controlView] setNeedsDisplay:YES];
 }
 
@@ -207,12 +207,12 @@
 }
 
 - (BOOL)isMouseOverDropdownPart {
-  return mousePosition_ == kDownloadItemMouseOverButtonPart;
+  return mousePosition_ == kDownloadItemMouseOverDropdownPart;
 }
 
 - (BOOL)isDropdownPartPressed {
   return [self isHighlighted]
-      && mousePosition_ == kDownloadItemMouseOverButtonPart;
+      && mousePosition_ == kDownloadItemMouseOverDropdownPart;
 }
 
 - (NSBezierPath*)leftRoundedPath:(CGFloat)radius inRect:(NSRect)rect {