Update to Chromium revision 788460a4 (#345352)

- Mac: 10.10 SDK is now required for building (see http://crbug.com/463170#c63).
  Older SDKs can be used for a short time by setting mac_sdk_min via GYP_DEFINES.

libcef/browser/scheme_handler.cc

@@ -70,7 +70,7 @@ void InstallInternalProtectedHandlers(
     DCHECK(IsInternalProtectedScheme(scheme));
 
     bool set_protocol = job_factory->SetProtocolHandler(
-        scheme, protocol_handler.release());
+        scheme, make_scoped_ptr(protocol_handler.release()));
     DCHECK(set_protocol);
   }
 }