Fixes the implementation of TabContentsViewMac::TakeFocus().

chrome/browser/tab_contents/tab_contents_view_mac.mm

Index: chrome/browser/tab_contents/tab_contents_view_mac.mm
===================================================================
--- chrome/browser/tab_contents/tab_contents_view_mac.mm	(revision 14963)
+++ chrome/browser/tab_contents/tab_contents_view_mac.mm	(working copy)
@@ -126,8 +126,14 @@
   NOTIMPLEMENTED();
 }
 
+// This is called when we the renderer asks us to take focus back (i.e., it has
+// iterated past the last focusable element on the page).
 void TabContentsViewMac::TakeFocus(bool reverse) {
-  [cocoa_view_.get() becomeFirstResponder];
+  if (reverse) {
+    [[cocoa_view_ window] selectPreviousKeyView:cocoa_view_.get()];
+  } else {
+    [[cocoa_view_ window] selectNextKeyView:cocoa_view_.get()];
+  }
 }
 
 void TabContentsViewMac::HandleKeyboardEvent(