Replace usage of basictypes.h with a combination of stdint.h and base/macros.h.

Replace usage of basictypes.h with a combination of stdint.h and base/macros.h.

Fix some style issues regarding order of includes and forward declararions.

BUG=416623
Committed: https://crrev.com/5cb1f549d544e2b1bd5ee43eca5bc8b6bdc3b67e
Cr-Commit-Position: refs/heads/master@{#296139}

[Sorin Jianu, 2014-09-22 20:59:15]

sorin@chromium.org changed reviewers:
+ waffles@chromium.org

[Sorin Jianu, 2014-09-22 21:00:19]

This is mostly a mechanical change base on file and replace but there are some
non-mechanical changes, such as the ones in background_downloader_win.cc

[waffles, 2014-09-22 21:11:56]

lgtm

[Sorin Jianu, 2014-09-23 01:44:51]

The CQ bit was checked by sorin@chromium.org

[commit-bot: I haz the power, 2014-09-23 01:45:45]

CQ is trying da patch. Follow status at
 https://chromium-cq-status.appspot.com/patch-status/590333002/1

[commit-bot: I haz the power, 2014-09-23 04:07:54]

Committed patchset #1 (id:1) as 4acc1def3b2ea3bf529b3dad9dbaad608ada61ee

[commit-bot: I haz the power, 2014-09-23 04:08:30]

Patchset 1 (id:??) landed as
https://crrev.com/5cb1f549d544e2b1bd5ee43eca5bc8b6bdc3b67e
Cr-Commit-Position: refs/heads/master@{#296139}