[Android] Send top-level data:// requests to the browser.
[Android] Send top-level data:// requests to the browser.

The Android WebView API informs the embedder of all top-level navigations,
including navigations to URLs with the data:// scheme.
To remain compatible with the WebView API (and the Android Browser
which is implemented using the WebView API) we need to be able to inform the
embedder of top-level navigations to data:// URLs too.
In order to do that we first need to send them over from the renderer to
the browser.

BUG=130006
TEST=none

Review URL: https://chromiumcodereview.appspot.com/10440068

git-svn-id: de016e52bd170d2d4f2344f9bf92d50478b649e0@143228 0039d316-1c4b-4281-b951-d872f2087c98

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walk-efl,fujunwei/chromium-crosswalk,Pluto-tv/chromium-crosswalk,ChromiumWebApps/chromium,hgl888/chromium-crosswalk-efl,hgl888/chromium-crosswalk-efl,ltilve/chromium,Pluto-tv/chromium-crosswalk,crosswalk-project/chromium-crosswalk-efl,timopulkkinen/BubbleFish,zcbenz/cefode-chromium,zcbenz/cefode-chromium,PeterWangIntel/chromium-crosswalk,ondra-novak/chromium.src,Fireblend/chromium-crosswalk,krieger-od/nwjs_chromium.src,hgl888/chromium-crosswalk,junmin-zhu/chromium-rivertrail,Jonekee/chromium.src,mohamed--abdel-maksoud/chromium.src,M4sse/chromium.src,chuan9/chromium-crosswalk,krieger-od/nwjs_chromium.src,nacl-webkit/chrome_deps,keishi/chromium,markYoungH/chromium.src,jaruba/chromium.src,timopulkkinen/BubbleFish,keishi/chromium,mohamed--abdel-maksoud/chromium.src,hujiajie/pa-chromium,M4sse/chromium.src,timopulkkinen/BubbleFish,anirudhSK/chromium,ChromiumWebApps/chromium,dednal/chromium.src,nacl-webkit/chrome_deps,chuan9/chromium-crosswalk,zcbenz/cefode-chromium,Just-D/chromium-1,fujunwei/chromium-crosswalk,hgl888/chromium-crosswalk,markYoungH/chromium.src,bright-sparks/chromium-spacewalk,ChromiumWebApps/chromium,jaruba/chromium.src,krieger-od/nwjs_chromium.src,Fireblend/chromium-crosswalk,pozdnyakov/chromium-crosswalk,axinging/chromium-crosswalk,hgl888/chromium-crosswalk,jaruba/chromium.src,Just-D/chromium-1,TheTypoMaster/chromium-crosswalk,nacl-webkit/chrome_deps,Jonekee/chromium.src,littlstar/chromium.src,pozdnyakov/chromium-crosswalk,jaruba/chromium.src,hujiajie/pa-chromium,krieger-od/nwjs_chromium.src,axinging/chromium-crosswalk,nacl-webkit/chrome_deps,patrickm/chromium.src,M4sse/chromium.src,jaruba/chromium.src,ondra-novak/chromium.src,markYoungH/chromium.src,markYoungH/chromium.src,ltilve/chromium,markYoungH/chromium.src,hujiajie/pa-chromium,patrickm/chromium.src,mogoweb/chromium-crosswalk,junmin-zhu/chromium-rivertrail,TheTypoMaster/chromium-crosswalk,Just-D/chromium-1,M4sse/chromium.src,hgl888/chromium-crosswalk-efl,anirudhSK/chromium,Fireblend/chromium-crosswalk,fujunwei/chromium-crosswalk,Chilledheart/chromium,anirudhSK/chromium,Fireblend/chromium-crosswalk,patrickm/chromium.src,hujiajie/pa-chromium,littlstar/chromium.src,chuan9/chromium-crosswalk,hgl888/chromium-crosswalk-efl,mogoweb/chromium-crosswalk,axinging/chromium-crosswalk,bright-sparks/chromium-spacewalk,M4sse/chromium.src,PeterWangIntel/chromium-crosswalk,Chilledheart/chromium,mohamed--abdel-maksoud/chromium.src,nacl-webkit/chrome_deps,patrickm/chromium.src,Fireblend/chromium-crosswalk,keishi/chromium,timopulkkinen/BubbleFish,markYoungH/chromium.src,hgl888/chromium-crosswalk-efl,patrickm/chromium.src,crosswalk-project/chromium-crosswalk-efl,littlstar/chromium.src,crosswalk-project/chromium-crosswalk-efl,ltilve/chromium,anirudhSK/chromium,timopulkkinen/BubbleFish,markYoungH/chromium.src,junmin-zhu/chromium-rivertrail,ondra-novak/chromium.src,ChromiumWebApps/chromium,ltilve/chromium,dushu1203/chromium.src,Pluto-tv/chromium-crosswalk,dednal/chromium.src,zcbenz/cefode-chromium,nacl-webkit/chrome_deps,crosswalk-project/chromium-crosswalk-efl,keishi/chromium,dushu1203/chromium.src,hgl888/chromium-crosswalk,markYoungH/chromium.src,ondra-novak/chromium.src,junmin-zhu/chromium-rivertrail,zcbenz/cefode-chromium,ChromiumWebApps/chromium,fujunwei/chromium-crosswalk,keishi/chromium,axinging/chromium-crosswalk,mogoweb/chromium-crosswalk,M4sse/chromium.src,ChromiumWebApps/chromium,Chilledheart/chromium,Chilledheart/chromium,timopulkkinen/BubbleFish,bright-sparks/chromium-spacewalk,axinging/chromium-crosswalk,Just-D/chromium-1,anirudhSK/chromium,keishi/chromium,Pluto-tv/chromium-crosswalk,PeterWangIntel/chromium-crosswalk,Just-D/chromium-1,hgl888/chromium-crosswalk-efl,nacl-webkit/chrome_deps,mogoweb/chromium-crosswalk,mohamed--abdel-maksoud/chromium.src,axinging/chromium-crosswalk,dednal/chromium.src,junmin-zhu/chromium-rivertrail,Fireblend/chromium-crosswalk,Jonekee/chromium.src,axinging/chromium-crosswalk,bright-sparks/chromium-spacewalk,ltilve/chromium,M4sse/chromium.src