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This should prevent problems such as described in

  [chromium-dev] PSA: clobber build needed for IDR_INSPECTOR_*
                 compile errors in blink_platform_impl.cc

Depends on https://codereview.chromium.org/431883002

BUG=400860
TBR=brettw

Review URL: https://codereview.chromium.org/430083002

git-svn-id: svn://svn.chromium.org/chrome/trunk/src@288077 0039d316-1c4b-4281-b951-d872f2087c98