Merge 96554 - A little more WebSQLDatabase thread safety.

Merge 96554 - A little more WebSQLDatabase thread safety.

https://bugs.webkit.org/show_bug.cgi?id=69277



- switch to using AtomicallyInitializedStatic where appropiate

- avoid using some Strings across threads



Reviewed by David Levin.



Existing tests apply.



* storage/AbstractDatabase.cpp:

(WebCore::guidMutex):

(WebCore::guidToVersionMap):

(WebCore::guidToDatabaseMap):

(WebCore::guidForOriginAndName):

(WebCore::AbstractDatabase::databaseInfoTableName):

(WebCore::AbstractDatabase::AbstractDatabase):

(WebCore::AbstractDatabase::performOpenAndVerify):

(WebCore::AbstractDatabase::getVersionFromDatabase):

(WebCore::AbstractDatabase::setVersionInDatabase):

* storage/AbstractDatabase.h:

* storage/chromium/DatabaseTrackerChromium.cpp:

(WebCore::DatabaseTracker::tracker):

* storage/chromium/QuotaTracker.cpp:

(WebCore::QuotaTracker::instance):





TBR=michaeln@google.com
Committed: http://src.chromium.org/viewvc/chrome?view=rev&revision=96742