Reland 73220 - GpuProcessHost does not relaunch GPU process after threshold no. of crashes.
Reland 73220 - GpuProcessHost does not relaunch GPU process after threshold no. of crashes.

Also added buckets to histograms to count the number of times the GPU process crashed in a single session.

TEST=simulate crashes, try
BUG=none

Review URL: http://codereview.chromium.org/6343010



git-svn-id: de016e52bd170d2d4f2344f9bf92d50478b649e0@73321 0039d316-1c4b-4281-b951-d872f2087c98

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