Mac: Prevent NTP mousewheel events from being suppressed on Lion.

chrome/browser/ui/webui/ntp/new_tab_page_handler.cc

Index: chrome/browser/ui/webui/ntp/new_tab_page_handler.cc
diff --git a/chrome/browser/ui/webui/ntp/new_tab_page_handler.cc b/chrome/browser/ui/webui/ntp/new_tab_page_handler.cc
index e9ee7bfabdf04538a8b54ee01d522d3979da30a8..54b53192c2e5be47df24b8a5fd647df771991138 100644
--- a/chrome/browser/ui/webui/ntp/new_tab_page_handler.cc
+++ b/chrome/browser/ui/webui/ntp/new_tab_page_handler.cc
@@ -23,6 +23,10 @@
 #include "grit/generated_resources.h"
 #include "ui/base/l10n/l10n_util.h"
 
+#if defined(OS_MACOSX)

[Patrick Dubroy, 2012/04/16 21:27:59]

Whoops. There should be no changes in this file.

+#include "base/mac/mac_util.h"
+#endif
+
 static const int kIntroDisplayMax = 10;
 
 // The URL of a knowledge-base article about the new NTP.
@@ -190,6 +194,19 @@ void NewTabPageHandler::GetLocalizedValues(Profile* profile,
                       l10n_util::GetStringUTF16(IDS_LEARN_MORE));
   }
 #endif
+
+  LOG(WARNING) << "*********** ntp load";
+
+  // On Mac OS X 10.7+, horizontal scrolling can be treated as a back or
+  // forward gesture. Pass through a flag that indicates whether or not that
+  // feature is enabled.
+#if defined(OS_MACOSX)
+  values->SetBoolean("isSwipeTrackingFromScrollEventsEnabled",
+      base::mac::IsSwipeTrackingFromScrollEventsEnabled());
+#else
+  values->SetBoolean("isSwipeTrackingFromScrollEventsEnabled",
+      false);
+#endif
 }
 
 // static