You don't have to do anything on any browser since xdebug is working on the server. Although, you have to be sure that you have set things right.
In your php.ini, be sure that html_errors is on.
Below is my xdebug configuration, so you can compare things. But my system may not have the same structure as yours, so check where do you have your zend_extension. I have this configuration in a file called xdebug.ini on /etc/php/apache2-php5/ext/ . You may have the configuration on a separate file, like this, or you can add it to your php.ini, doesn't matter.
zend_extension=/usr/lib64/php5.5/lib/extensions/no-debug-zts-20121212/xdebug.so
xdebug.auto_trace="1"
xdebug.trace_output_dir="/var/log/xdebug"
xdebug.trace_output_name="trace.%s_%t"
xdebug.trace_format="0"
xdebug.trace_options="1"
xdebug.collect_assignments="1"
xdebug.collect_includes="1"
xdebug.collect_params="4"
xdebug.collect_return="0"
xdebug.collect_vars="1"
xdebug.default_enable="1"
xdebug.extended_info="1"
xdebug.manual_url="http://www.php.net"
xdebug.max_nesting_level="100"
xdebug.show_exception_trace="0"
xdebug.show_local_vars="1"
xdebug.show_mem_delta="1"
xdebug.dump.COOKIE=false
xdebug.dump.ENV=false
xdebug.dump.FILES=false
xdebug.dump.GET="NULL"
xdebug.dump.POST="NULL"
xdebug.dump.REQUEST="NULL"
xdebug.dump.SERVER="NULL"
xdebug.dump.SESSION="NULL"
xdebug.dump_globals="1"
xdebug.dump_once="1"
xdebug.dump_undefined="1"
xdebug.pror_enable="0"
xdebug.profiler_enable="1"
xdebug.profiler_output_dir="/var/log/xdebug"
xdebug.profiler_output_name="%s_%t"
xdebug.profiler_enable_trigger="0"
xdebug.profiler_append="0"
xdebug.profiler_aggregate="0"
xdebug.remote_enable="On"
xdebug.remote_handler="dbgp"
xdebug.remote_host="localhost"
xdebug.remote_mode="req"
xdebug.remote_port="9000"
xdebug.remote_autostart="0"
xdebug.remote_log=""
xdebug.idekey=""
xdebug.var_display_max_data="16384"
xdebug.var_display_max_depth="10"
xdebug.var_display_max_children="512"
xdebug.max_nesting_level="100"
xdebug.overload_var_dump="1"
xdebug.scream="1"
xdebug.cli_color="1"
xdebug.coverage_enable="1"
Of course, remember to restart apache after doing changes on xdebug.ini or php.ini