DevTools: handle zoom shortcuts in hosted mode on Mac OS X

Source/devtools/front_end/host/InspectorFrontendHost.js

Index: Source/devtools/front_end/host/InspectorFrontendHost.js
diff --git a/Source/devtools/front_end/host/InspectorFrontendHost.js b/Source/devtools/front_end/host/InspectorFrontendHost.js
index 011adffffbc371743d505e7589157a54dbe51c9c..e51e3c3405e98b01051866ecb7d0bebb1d3a66fe 100644
--- a/Source/devtools/front_end/host/InspectorFrontendHost.js
+++ b/Source/devtools/front_end/host/InspectorFrontendHost.js
@@ -306,7 +306,8 @@ WebInspector.InspectorFrontendHostStub = function()
     function stopEventPropagation(event)
     {
         // Let browser handle Ctrl+/Ctrl- shortcuts in hosted mode.
-        if (event.ctrlKey && (event.keyCode === 187 || event.keyCode === 189))
+        var zoomModifier = WebInspector.isMac() ? event.metaKey : event.ctrlKey;
+        if (zoomModifier && (event.keyCode === 187 || event.keyCode === 189))
             event.stopPropagation();
     }
     document.addEventListener("keydown", stopEventPropagation, true);