WebProcesses use lots of cpu in the background if there are a lot of plugins.

[Stephanie Lewis]

Everytime pluginDidEvaluate is called the WebProcess page throttler is disabled.  This was done originally so that web apps like Pandora could continue to play smoothly in the background.
We only need to stop the page throttler is audio is playing.

[Stephanie Lewis]

Created attachment 227807 [details]
patch

[Stephanie Lewis]

Going to change the bool to an enum so I don't need the isSupported function but the general layout of the patch should be correct

[Stephanie Lewis]

Created attachment 227980 [details]
reworked patch

[Anders Carlsson]

Comment on attachment 227980 [details]
reworked patch

View in context: https://bugs.webkit.org/attachment.cgi?id=227980&action=review

> Source/WebKit2/PluginProcess/PluginProcess.cpp:264
> +    for (auto it = m_webProcessConnections.begin(), end = m_webProcessConnections.end(); it != end; ++it) {
> +        WebProcessConnection* connection = it->get();
> +        connection->audioHardwareDidBecomeActive();
> +    }

This can use range for.

> Source/WebKit2/PluginProcess/PluginProcess.cpp:272
> +    for (auto it = m_webProcessConnections.begin(), end = m_webProcessConnections.end(); it != end; ++it) {
> +        WebProcessConnection* connection = it->get();
> +        connection->audioHardwareDidBecomeInactive();
> +    }

Ditto.

> Source/WebKit2/PluginProcess/PluginProcess.h:45
> +    public WebCore::AudioHardwareListener::Client

Please put this on the same line. I also don't think it needs to be public.

> Source/WebKit2/PluginProcess/PluginProcess.h:102
> +    //AudioHardwareListenerClient

Missing space after //.

[Stephanie Lewis]

http://trac.webkit.org/changeset/166443