Don't throw away GPU data on non-PCI architectures
Don't throw away GPU data on non-PCI architectures

GpuDataManagerImpl checks whether we know the GPU's PCI vendor and
device id. If not, the collected GPU data is thrown away and is not
shown in about:gpu. Since most non-x86 architectures are also non-PCI,
only do this check on the x86 family.

BUG=130013
TEST=none


Review URL: https://chromiumcodereview.appspot.com/10456005

git-svn-id: de016e52bd170d2d4f2344f9bf92d50478b649e0@139523 0039d316-1c4b-4281-b951-d872f2087c98

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