[chromedriver] Replace "--load-component-extension" with "--disable-extensions-except" switch.

[chromedriver] Replace "--load-component-extension" with "--disable-extensions-except" switch.

BUG=chromedriver:1625

[gmanikpure, 2016-12-06 18:43:20]

gmanikpure@chromium.org changed reviewers:
+ samuong@chromium.org

[gmanikpure, 2016-12-06 18:48:13]

On 2016/12/06 18:43:20, gmanikpure wrote:

Hi Sam,

On Linux, Java & Py tests runs successfully with this change.
But on Mac, there are two issues:
1) testCanInspectBackgroundPage and testCanLaunchApp still fails with error
message "Failed to find extension with id gegjcdcfeiojglhifpmibkadodekakpc" 

2) https://bugs.chromium.org/p/chromedriver/issues/detail?id=1460 is back again.
"Disable developer extension" appears.

Could you please take a look?

[samuong, 2016-12-06 19:00:52]

I don't think this will work in the general case. We don't *always* want to
disable extensions, so we can't unconditionally use --disable-extensions-except.
And if we use --load-extension, we run into the "disable developer mode
extensions" dialog that --load-component-extension is supposed to work around.

I've got a design proposal that should fix this over at
https://docs.google.com/document/d/1JYj9K61UyxIYavR8_HATYIglR9T_rDwAtLLsD3fbD...
(Googlers-only, sorry). In the meantime, can we disable the failing tests?

[gmanikpure, 2016-12-06 19:04:38]

On 2016/12/06 19:00:52, samuong wrote:
> I don't think this will work in the general case. We don't *always* want to
> disable extensions, so we can't unconditionally use
--disable-extensions-except.
> And if we use --load-extension, we run into the "disable developer mode
> extensions" dialog that --load-component-extension is supposed to work around.
> 
> I've got a design proposal that should fix this over at
>
https://docs.google.com/document/d/1JYj9K61UyxIYavR8_HATYIglR9T_rDwAtLLsD3fbD...
> (Googlers-only, sorry). In the meantime, can we disable the failing tests?

Sure, Thanks Sam. I have uploaded https://codereview.chromium.org/2550093004/
for disabling the tests.