Add --content-shell-host-window-size switch to control the window size for content_shell.

Add a command line switch to control the window size of content_shell.

This CL introduces a command line switch "--content-shell-host-window-size" to help the developers to specify the content_shell size for windowless ozone platforms like test, egltest, dri, caca.

Prior to this CL, the developer has to change the constants(kDefaultTestWindowWidthDip, kDefaultTestWindowHeightDip) in shell.cc to increase the content_shell resolution for above mentioned ozone platforms.

Committed: https://crrev.com/168b0ac2ed4f8fb818f0ad9fcfa1f2177f94fb9d
Cr-Commit-Position: refs/heads/master@{#308391}

[arunprasadr, 2014-12-08 17:53:28]

arurajku@cisco.com changed reviewers:
+ pfeldman@chromium.org

[arunprasadr, 2014-12-08 17:53:47]

PTAL

[arunprasadr, 2014-12-08 17:57:48]

On 2014/12/08 17:53:47, arurajku wrote:
> PTAL

Please ignore the typo in function name ("ShellShellSize")

[arunprasadr, 2014-12-08 18:06:45]

Uploaded a new CL with proper function name. PTAL. Thanks.

[arunprasadr, 2014-12-09 05:29:59]

arurajku@cisco.com changed reviewers:
+ mkwst@chromium.org

[Mike West, 2014-12-09 08:36:11]

Why do you need this functionality? Could you either link to a bug, expand the
CL description, or both? :)

[arunprasadr, 2014-12-10 04:42:25]

On 2014/12/09 08:36:11, Mike West wrote:
> Why do you need this functionality? Could you either link to a bug, expand the
> CL description, or both? :)

@Mike, updated the description. PTAL. Thanks.

[Mike West, 2014-12-15 08:39:35]

LGTM, but I'd change the flag from "bounds" to "size". "Bounds", to me, implies
position as well as size. Your CL only effects the latter.

[arunprasadr, 2014-12-15 12:03:24]

@Mike, Thanks for your review comments. Uploaded a new CL with different switch
name(--content-shell-host-window-size). PTAL. Thanks.

[arunprasadr, 2014-12-15 17:36:00]

The CQ bit was checked by arurajku@cisco.com

[commit-bot: I haz the power, 2014-12-15 17:37:10]

CQ is trying da patch. Follow status at
 https://chromium-cq-status.appspot.com/patch-status/783203002/40001

[commit-bot: I haz the power, 2014-12-15 19:36:35]

Committed patchset #3 (id:40001)

[commit-bot: I haz the power, 2014-12-15 19:37:23]

Patchset 3 (id:??) landed as
https://crrev.com/168b0ac2ed4f8fb818f0ad9fcfa1f2177f94fb9d
Cr-Commit-Position: refs/heads/master@{#308391}