disable webview handling of mouse click on gray area
disable webview handling of mouse click on gray area

Fix nwjs/nw.js#2963

reverts following commit

commit 81d0f757450f8b652bd2f8844ec0970ab9dbb5b4
Author: miu <miu@chromium.org>
Date:   Mon Nov 17 19:17:15 2014 -0800

    Focus content when clicking in 'gray area' during fullscreen-within-tab.

    A minor usability enhancement.  This is the Views version of the change,
    affecting Win/Linux/CrOS, whereas the Mac/Cocoa version landed earlier
    at r300326.

    BUG=421728

    Review URL: https://codereview.chromium.org/733223003

    Cr-Commit-Position: refs/heads/master@{#304554}

mohamed--abdel-maksoud/chromium.src,mohamed--abdel-maksoud/chromium.src,Jonekee/chromium.src,markYoungH/chromium.src,dednal/chromium.src,dednal/chromium.src,Jonekee/chromium.src,Jonekee/chromium.src,krieger-od/nwjs_chromium.src,jaruba/chromium.src,krieger-od/nwjs_chromium.src,jaruba/chromium.src,dushu1203/chromium.src,krieger-od/nwjs_chromium.src,dednal/chromium.src,krieger-od/nwjs_chromium.src,dednal/chromium.src,markYoungH/chromium.src,M4sse/chromium.src,M4sse/chromium.src,jaruba/chromium.src,dednal/chromium.src,mohamed--abdel-maksoud/chromium.src,markYoungH/chromium.src,Jonekee/chromium.src,M4sse/chromium.src,markYoungH/chromium.src,Jonekee/chromium.src,jaruba/chromium.src,markYoungH/chromium.src,M4sse/chromium.src,krieger-od/nwjs_chromium.src,markYoungH/chromium.src,dushu1203/chromium.src,dushu1203/chromium.src,M4sse/chromium.src,Jonekee/chromium.src,Jonekee/chromium.src,Jonekee/chromium.src,dushu1203/chromium.src,jaruba/chromium.src,dushu1203/chromium.src,jaruba/chromium.src,mohamed--abdel-maksoud/chromium.src,jaruba/chromium.src,mohamed--abdel-maksoud/chromium.src,dednal/chromium.src,dednal/chromium.src,dednal/chromium.src,krieger-od/nwjs_chromium.src,mohamed--abdel-maksoud/chromium.src,markYoungH/chromium.src,mohamed--abdel-maksoud/chromium.src,markYoungH/chromium.src,Jonekee/chromium.src,dushu1203/chromium.src,jaruba/chromium.src,dushu1203/chromium.src,jaruba/chromium.src,dushu1203/chromium.src,dednal/chromium.src,Jonekee/chromium.src,markYoungH/chromium.src,Jonekee/chromium.src,mohamed--abdel-maksoud/chromium.src,krieger-od/nwjs_chromium.src,krieger-od/nwjs_chromium.src,mohamed--abdel-maksoud/chromium.src,M4sse/chromium.src,jaruba/chromium.src,mohamed--abdel-maksoud/chromium.src,M4sse/chromium.src,M4sse/chromium.src,markYoungH/chromium.src,dednal/chromium.src,dushu1203/chromium.src,dushu1203/chromium.src,jaruba/chromium.src,M4sse/chromium.src,mohamed--abdel-maksoud/chromium.src,dednal/chromium.src,dushu1203/chromium.src,krieger-od/nwjs_chromium.src,M4sse/chromium.src,krieger-od/nwjs_chromium.src,M4sse/chromium.src,markYoungH/chromium.src,krieger-od/nwjs_chromium.src