Add more histograms to understand idle sockets. Add Net.SocketIdleTimeBeforeNextUse histograms to track how long a socket is idle before being requested again. Replace Net.SocketIdleTimeOnIOError with Net.SocketIdleTimeOnIOError2 which raises the sample max to 6 seconds and increases to 100 buckets.  I had incorrectly misread the code and assumed we closed idle sockets after 10 seconds.  We close idle sockets between 5 minutes and 5 minutes and 10 seconds of idle time.
Add more histograms to understand idle sockets.
Add Net.SocketIdleTimeBeforeNextUse histograms to track how long a socket is idle before being requested again.
Replace Net.SocketIdleTimeOnIOError with Net.SocketIdleTimeOnIOError2 which raises the sample max to 6 seconds and increases to 100 buckets.  I had incorrectly misread the code and assumed we closed idle sockets after 10 seconds.  We close idle sockets between 5 minutes and 5 minutes and 10 seconds of idle time.

Review URL: http://codereview.chromium.org/173256

git-svn-id: http://src.chromium.org/svn/trunk/src@24130 4ff67af0-8c30-449e-8e8b-ad334ec8d88c

Former-commit-id: 077aed1e9ea5f6298849a7967f86279df9d702f3
meego-tablet-ux/meego-app-browser,meego-tablet-ux/meego-app-browser,meego-tablet-ux/meego-app-browser,meego-tablet-ux/meego-app-browser,meego-tablet-ux/meego-app-browser,meego-tablet-ux/meego-app-browser,meego-tablet-ux/meego-app-browser,meego-tablet-ux/meego-app-browser,meego-tablet-ux/meego-app-browser,meego-tablet-ux/meego-app-browser