Various webview cleanup.

Various webview cleanup.

**********

- Optimized onSizeChanged().
- Got rid of throwing errors.
- Removed some unused or unnecessary helper functions.
- Removed some other unnecessary code.
- executeScript() and insertCSS() now share their code (since it was nearly identical in the first place).

BUG=431002
Committed: https://crrev.com/848f1ed0482838d44ffd0bbbd3b8db0e5b6362c6
Cr-Commit-Position: refs/heads/master@{#303713}

[paulmeyer, 2014-11-10 21:55:25]

paulmeyer@chromium.org changed reviewers:
+ fsamuel@chromium.org

[paulmeyer, 2014-11-10 21:55:25]

+fsamuel@

[Fady Samuel, 2014-11-11 00:04:21]

Horray for negative net line count! lgtm!

https://codereview.chromium.org/715583007/diff/1/extensions/renderer/resource...
File extensions/renderer/resources/guest_view/web_view.js (right):

https://codereview.chromium.org/715583007/diff/1/extensions/renderer/resource...
extensions/renderer/resources/guest_view/web_view.js:178: }
minWidth = Math.min(minWidth, maxWidth);

https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Obje...

https://codereview.chromium.org/715583007/diff/1/extensions/renderer/resource...
extensions/renderer/resources/guest_view/web_view.js:181: }
minHeight = Math.min(minHeight, maxHeight);

[paulmeyer, 2014-11-11 00:30:26]

The CQ bit was checked by paulmeyer@chromium.org

[commit-bot: I haz the power, 2014-11-11 00:31:51]

CQ is trying da patch. Follow status at
 https://chromium-cq-status.appspot.com/patch-status/715583007/20001

[commit-bot: I haz the power, 2014-11-11 02:19:21]

The CQ bit was unchecked by commit-bot@chromium.org

[commit-bot: I haz the power, 2014-11-11 02:19:22]

Try jobs failed on following builders:
  linux_chromium_asan_rel on tryserver.chromium.linux
(http://build.chromium.org/p/tryserver.chromium.linux/builders/linux_chromium_...)

[paulmeyer, 2014-11-11 16:42:37]

The CQ bit was checked by paulmeyer@chromium.org

[commit-bot: I haz the power, 2014-11-11 16:43:17]

CQ is trying da patch. Follow status at
 https://chromium-cq-status.appspot.com/patch-status/715583007/40001

[commit-bot: I haz the power, 2014-11-11 17:39:59]

The CQ bit was unchecked by commit-bot@chromium.org

[commit-bot: I haz the power, 2014-11-11 17:40:00]

Try jobs failed on following builders:
  linux_chromium_rel_ng on tryserver.chromium.linux
(http://build.chromium.org/p/tryserver.chromium.linux/builders/linux_chromium_...)

[paulmeyer, 2014-11-11 18:56:04]

The CQ bit was checked by paulmeyer@chromium.org

[commit-bot: I haz the power, 2014-11-11 18:57:31]

CQ is trying da patch. Follow status at
 https://chromium-cq-status.appspot.com/patch-status/715583007/60001

[commit-bot: I haz the power, 2014-11-11 20:37:45]

Committed patchset #4 (id:60001)

[commit-bot: I haz the power, 2014-11-11 20:39:10]

Patchset 4 (id:??) landed as
https://crrev.com/848f1ed0482838d44ffd0bbbd3b8db0e5b6362c6
Cr-Commit-Position: refs/heads/master@{#303713}