Stop Chrome from switching to dedicated GPU
I was having an issue with gfxCardStatus not being able to switch to the Integrated Intel GPU because of a Google Chrome Helper task. My mid-2010 Macbook Pro has a bad discrete GPU so of course that is pretty inconvenient. This worked for me:

Go to chrome://settings and set the Use hardware acceleration when available option to off:

Put this in the omnibar to find this setting easily:

chrome://settings/?search=hardware