[Mac] Don't copy text typed into the find bar to the find pasteboard in incognito windows.

chrome/browser/ui/cocoa/find_bar/find_bar_cocoa_controller.mm

Index: chrome/browser/ui/cocoa/find_bar/find_bar_cocoa_controller.mm
diff --git a/chrome/browser/ui/cocoa/find_bar/find_bar_cocoa_controller.mm b/chrome/browser/ui/cocoa/find_bar/find_bar_cocoa_controller.mm
index bd6e6183bdef8b6556b3d3d86a8d109b3fdd4779..082dd0d7e29880c42f793211e48495e5bc283475 100644
--- a/chrome/browser/ui/cocoa/find_bar/find_bar_cocoa_controller.mm
+++ b/chrome/browser/ui/cocoa/find_bar/find_bar_cocoa_controller.mm
@@ -4,8 +4,10 @@
 
 #import <Cocoa/Cocoa.h>
 
+#include "base/auto_reset.h"
 #include "base/mac/mac_util.h"
 #include "base/sys_string_conversions.h"
+#include "chrome/browser/profiles/profile.h"
 #include "chrome/browser/ui/cocoa/browser_window_controller.h"
 #import "chrome/browser/ui/cocoa/find_bar/find_bar_cocoa_controller.h"
 #import "chrome/browser/ui/cocoa/find_bar/find_bar_bridge.h"
@@ -170,9 +172,12 @@ const float kRightEdgeOffset = 25;
   FindTabHelper* find_tab_helper = tab_contents->find_tab_helper();
 
   NSString* findText = [findText_ stringValue];
-  suppressPboardUpdateActions_ = YES;
-  [[FindPasteboard sharedInstance] setFindText:findText];
-  suppressPboardUpdateActions_ = NO;
+  // Only copy typed text to the FindPasteboard for non-incognito windows, see
+  // http://crbug.com/85306.
+  if (!tab_contents->profile()->IsOffTheRecord()) {
+    AutoReset<BOOL> auto_reset(&suppressPboardUpdateActions_, YES);
+    [[FindPasteboard sharedInstance] setFindText:findText];
+  }
 
   if ([findText length] > 0) {
     find_tab_helper->