[chromium] Now that the chromium port is using a different dom_storage backend

[chromium] Now that the chromium port is using a different dom_storage backend
library in its main browser process, there are a handful of files that should no
longer be included in the build, and a few files than should be deleted
outright, and the webkit api should be modified to reflect the new (and smaller)
contract between the embedder and webkit/webcore.
https://bugs.webkit.org/show_bug.cgi?id=83807

Reviewed by Adam Barth.

Source/WebCore:

No new tests, existing tests apply.

* WebCore.gyp/WebCore.gyp: Exclude several files from the WebCore/storage directory.
* storage/StorageEventDispatcher.h: Delete a stale comment.

Source/WebKit/chromium:

* WebKit.gyp: Delete a few files.
* public/WebStorageNamespace.h:  Remove some unused data members and methods, and annotate close() as deprecated.
* public/platform/WebKitPlatformSupport.h: Annotate a method as deprecated.
* src/StorageAreaProxy.cpp: Remove the include of a deleted file.
* src/StorageEventDispatcherChromium.cpp: Removed.
* src/StorageEventDispatcherImpl.cpp: Added a FIXME comment for upcoming work.
* src/StorageNamespaceProxy.cpp: Modified to no longer call out to the embedder thru the deprecated close() method.
* src/StorageNamespaceProxy.h: Moved some blank lines around.
* src/WebStorageAreaImpl.cpp: Removed.
* src/WebStorageAreaImpl.h: Removed.
* src/WebStorageEventDispatcherImpl.cpp: Cleaned up some cruft.
* src/WebStorageNamespaceImpl.cpp: Removed.
* src/WebStorageNamespaceImpl.h: Removed.

git-svn-id: http://svn.webkit.org/repository/webkit/trunk@114160 268f45cc-cd09-0410-ab3c-d52691b4dbfc