drive: More simplified ChangeListLoader

All changestamp checks are done in LoadAfterGetAboutResource().
Error returned from ChangeListProcessor::Apply() is handled only in LoadChangeListFromServerAfterUpdate().

Merge CheckChangestampAndLoadDirectoryIfNeeded() to LoadAfterGetAboutResource().
Merge UpdateFromChangeList() to LoadChangeListFromServerAfterLoadChangeList().
Merge UpdateFromChangeListAfterApply() to LoadChangeListFromServerAfterUpdate().
Rename DoLoadDirectoryFromServer() to LoadDirectoryFromServer().
Stop passing AboutResource to LoadChangeListFromServer().

BUG=260526
TEST=unit_tests
R=kinaba@chromium.org

Review URL: https://codereview.chromium.org/118903003

git-svn-id: svn://svn.chromium.org/chrome/trunk/src@241824 0039d316-1c4b-4281-b951-d872f2087c98
Bug fix: Translate: Have the translate icon shown when using the field trial

Not only with --enable-translate-new-ux, but also with the field trial, the translate icon should be shown.

BUG=329126
TEST=manual

Review URL: https://codereview.chromium.org/104873016

git-svn-id: svn://svn.chromium.org/chrome/trunk/src@241825 0039d316-1c4b-4281-b951-d872f2087c98
SVN changes up to revision 241824
SVN changes up to revision 241825