Revert 251087 "Add wallpaper api tests"

> Add wallpaper api tests
> 
> This CL add the following tests:
> 1. test chrome.setWallpaper can set ChromeOS wallpaper from jpg or png formatted arraybuffer.
> 2. test chrome.setWallpaper can set ChromeOS wallpaper from a valid url that point to a jpg or png image.
> 3. test an invalide URL wont set wallpaper
> 4. test a new wallpaper request will cancel previous unfinished request
> 
> 
> BUG=176183
> 
> Review URL: https://codereview.chromium.org/153093010

AFAICT this failed as soon as you landed it.

Here's output from one of the bots:

ExtensionApiTest.Wallpaper (run #1):
[ RUN      ] ExtensionApiTest.Wallpaper
[21364:21364:0213/150838:1514562885:ERROR:audio_manager_pulse.cc(248)]
Failed to connect to the context.  Error: Connection refused
Xlib:  extension "RANDR" missing on display ":9".
[7:7:0213/150839:WARNING:sandbox_linux.cc(55)] Activated seccomp-bpf
sandbox for process type: renderer.
[21409:21409:0213/230839:WARNING:sandbox_linux.cc(55)] Activated
seccomp-bpf sandbox for process type: gpu-process.
[15:15:0213/150840:WARNING:sandbox_linux.cc(55)] Activated seccomp-bpf
sandbox for process type: renderer.
[24:24:0213/150840:WARNING:sandbox_linux.cc(55)] Activated seccomp-bpf
sandbox for process type: utility.
Corrupt JPEG data: premature end of data segment
[21364:21364:0213/150841:1516721525:INFO:CONSOLE(0)] "[SUCCESS]
setJpgWallpaperFromAppLocalFile", source:
chrome-extension://neonnameailmmllmeicdbcndfninlogd/_generated_background_page.html
(0)
[31:31:0213/150841:WARNING:sandbox_linux.cc(55)] Activated seccomp-bpf
sandbox for process type: utility.
[21364:21364:0213/150841:1516803158:INFO:CONSOLE(0)] "[SUCCESS]
setPngWallpaperFromAppLocalFile", source:
chrome-extension://neonnameailmmllmeicdbcndfninlogd/_generated_background_page.html
(0)
[38:38:0213/150841:WARNING:sandbox_linux.cc(55)] Activated seccomp-bpf
sandbox for process type: utility.
Corrupt JPEG data: premature end of data segment
[21364:21364:0213/150841:1517187827:INFO:CONSOLE(0)] "[SUCCESS]
setJpgWallpaperFromURL", source:
chrome-extension://neonnameailmmllmeicdbcndfninlogd/_generated_background_page.html
(0)
[45:45:0213/150841:WARNING:sandbox_linux.cc(55)] Activated seccomp-bpf
sandbox for process type: utility.
[21364:21364:0213/150841:1517523379:INFO:CONSOLE(0)] "[SUCCESS]
setPngWallpaperFromURL", source:
chrome-extension://neonnameailmmllmeicdbcndfninlogd/_generated_background_page.html
(0)
[21364:21446:0213/150841:1517544840:WARNING:embedded_test_server.cc(231)]
Request not handled. Returning 404:
/extensions/api_test/wallpaper/test1.jpg
[52:52:0213/150841:WARNING:sandbox_linux.cc(55)] Activated seccomp-bpf
sandbox for process type: utility.
/usr/include/c++/4.6/debug/vector:320:error: attempt to subscript
container 
    with out-of-bounds index 0, but container only holds 0 elements.

Objects involved in the operation:
sequence "this" @ 0x0x7ffffdb6a470 {
}

at: http://build.chromium.org/p/chromium.chromiumos/builders/Linux%20ChromiumOS%20Tests%20%28dbg%29%282%29/builds/10341/steps/browser_tests/logs/Wallpaper

TBR=bshe@chromium.org

Review URL: https://codereview.chromium.org/167243002

git-svn-id: svn://svn.chromium.org/chrome/trunk/src@251366 0039d316-1c4b-4281-b951-d872f2087c98
SVN changes up to revision 251366