[Mac] Window titles for Expose.

chrome/browser/cocoa/browser_window_controller.mm

Index: chrome/browser/cocoa/browser_window_controller.mm
diff --git a/chrome/browser/cocoa/browser_window_controller.mm b/chrome/browser/cocoa/browser_window_controller.mm
index 12d7b6cde9b35d79b0a720d1b6d76f5aab2e259f..3951e4c1dc2356393e1214fdf61de7d474ea96e4 100644
--- a/chrome/browser/cocoa/browser_window_controller.mm
+++ b/chrome/browser/cocoa/browser_window_controller.mm
@@ -24,6 +24,7 @@
 #import "chrome/browser/cocoa/bookmark_editor_controller.h"
 #import "chrome/browser/cocoa/browser_window_cocoa.h"
 #import "chrome/browser/cocoa/browser_window_controller.h"
+#import "chrome/browser/cocoa/chrome_browser_window.h"
 #import "chrome/browser/cocoa/download_shelf_controller.h"
 #import "chrome/browser/cocoa/extension_shelf_controller.h"
 #import "chrome/browser/cocoa/find_bar_cocoa_controller.h"
@@ -360,7 +361,8 @@ willPositionSheet:(NSWindow*)sheet
   // message, since it just means that a menu extra (on the "system status bar")
   // was activated; we'll get another |-windowDidResignKey| if we ever really
   // lose key window status.
-  if ([NSApp isActive] && ([NSApp keyWindow] == window_))
+  if ([NSApp isActive] &&
+      ([NSApp keyWindow] == static_cast<NSWindow*>(window_)))
     return;
 
   // We need to deactivate the controls (in the "WebView"). To do this, get the
@@ -1239,6 +1241,10 @@ willPositionSheet:(NSWindow*)sheet
   }
   DCHECK_GE(maxY, minY);
 
+  // Suppress title drawing for normal windows (popups use normal
+  // window title bars).
+  [window_ setShouldHideTitle:[self isNormalWindow]];
+
   // Place the toolbar at the top of the reserved area, but only if we're not in
   // fullscreen mode.
   NSView* toolbarView = [toolbarController_ view];