Begin uniting the TabPersistentStore and StorageDelegate

Begin uniting the TabPersistentStore and StorageDelegate

* Gives the two classes a common base class called
  TabPersister to extend.

* Moves some functions for dealing with TabStates into
  the TabState class.

* Starts combining logic for saving Tabs between the
  StorageDelegate and the TabPersistentStore.

BUG=443773, 451280
Committed: https://crrev.com/dbd616cd21d191b02c96c19421b9ffc42a82933c
Cr-Commit-Position: refs/heads/master@{#313331}

[gone, 2015-01-26 21:12:36]

dfalcantara@chromium.org changed reviewers:
+ dtrainor@chromium.org, tedchoc@chromium.org

[David Trainor- moved to gerrit, 2015-01-27 01:55:03]

lgtm

https://chromiumcodereview.appspot.com/868323003/diff/40001/chrome/android/ja...
File chrome/android/java/src/org/chromium/chrome/browser/TabState.java (right):

https://chromiumcodereview.appspot.com/868323003/diff/40001/chrome/android/ja...
chrome/android/java/src/org/chromium/chrome/browser/TabState.java:329: String
tabStateFilename = getTabStateFilename(tabId, encrypted);
Can you just inline this?  No big deal either way though.

[gone, 2015-01-27 19:08:07]

https://chromiumcodereview.appspot.com/868323003/diff/40001/chrome/android/ja...
File chrome/android/java/src/org/chromium/chrome/browser/TabState.java (right):

https://chromiumcodereview.appspot.com/868323003/diff/40001/chrome/android/ja...
chrome/android/java/src/org/chromium/chrome/browser/TabState.java:329: String
tabStateFilename = getTabStateFilename(tabId, encrypted);
On 2015/01/27 01:55:03, David Trainor wrote:
> Can you just inline this?  No big deal either way though.

Done.

[gone, 2015-01-27 19:08:11]

The CQ bit was checked by dfalcantara@chromium.org

[commit-bot: I haz the power, 2015-01-27 19:09:03]

CQ is trying da patch. Follow status at
 https://chromium-cq-status.appspot.com/patch-status/868323003/60001

[commit-bot: I haz the power, 2015-01-27 19:59:54]

Committed patchset #4 (id:60001)

[commit-bot: I haz the power, 2015-01-27 20:01:01]

Patchset 4 (id:??) landed as
https://crrev.com/dbd616cd21d191b02c96c19421b9ffc42a82933c
Cr-Commit-Position: refs/heads/master@{#313331}