More groundwork for WebKit2 IconDatabase

Reviewed by Sam Weinig.

../WebCore: 

-Update the synchronous method names to be prefixed with "synchronous."
-Call asynchronous versions of the appropriate methods if the IconDatabase supports them.

Update icon database calls to be prefixed with "synchronous":
* loader/archive/cf/LegacyWebArchive.cpp:
(WebCore::LegacyWebArchive::create):
* loader/icon/IconDatabaseBase.h:
(WebCore::IconDatabaseBase::synchronousIconDataKnownForIconURL):
(WebCore::IconDatabaseBase::synchronousLoadDecisionForIconURL):
(WebCore::IconDatabaseBase::synchronousIconForPageURL):
* loader/icon/IconDatabase.cpp:
(WebCore::IconDatabase::synchronousIconForPageURL):
(WebCore::IconDatabase::readIconForPageURLFromDisk):
(WebCore::IconDatabase::synchronousIconURLForPageURL):
(WebCore::IconDatabase::synchronousLoadDecisionForIconURL):
(WebCore::IconDatabase::synchronousIconDataKnownForIconURL):
* loader/icon/IconDatabase.h:
* loader/icon/IconDatabaseBase.cpp:
(WebCore::IconDatabaseBase::synchronousIconURLForPageURL):

Add nascent support for an asynchronous icon database mode:
* loader/icon/IconDatabaseBase.h:
(WebCore::EnumCallback::create):
(WebCore::EnumCallback::~EnumCallback):
(WebCore::EnumCallback::performCallback):
(WebCore::EnumCallback::invalidate):
(WebCore::EnumCallback::EnumCallback):
(WebCore::ObjectCallback::create):
(WebCore::ObjectCallback::~ObjectCallback):
(WebCore::ObjectCallback::performCallback):
(WebCore::ObjectCallback::invalidate):
(WebCore::ObjectCallback::ObjectCallback):
(WebCore::IconDatabaseBase::supportsAsynchronousMode):
(WebCore::IconDatabaseBase::loadDecisionForIconURL):
(WebCore::IconDatabaseBase::iconDataForIconURL):

Add interfaces to use the asynchronous versions of certain IconDatabase calls:
* loader/DocumentLoader.cpp:
(WebCore::DocumentLoader::~DocumentLoader):
(WebCore::DocumentLoader::iconLoadDecisionAvailable):
(WebCore::iconLoadDecisionCallback):
(WebCore::DocumentLoader::getIconLoadDecisionForIconURL):
(WebCore::DocumentLoader::continueIconLoadWithDecision):
(WebCore::iconDataCallback):
(WebCore::DocumentLoader::getIconDataForIconURL):
* loader/DocumentLoader.h:

Break "startIconLoader" into two pieces so it can be used from both the synchronous and asynchronous 
icon database modes:
* loader/FrameLoader.cpp:
(WebCore::FrameLoader::iconLoadDecisionReceived):
(WebCore::FrameLoader::startIconLoader):
(WebCore::FrameLoader::continueIconLoadWithDecision):
* loader/FrameLoader.h:

* WebCore.exp.in:

../WebKit/efl: 

Update already-used function names:
* ewk/ewk_history.cpp:
(ewk_history_item_icon_surface_get):
(ewk_history_item_icon_object_add):
* ewk/ewk_settings.cpp:
(ewk_settings_icon_database_icon_surface_get):
(ewk_settings_icon_database_icon_object_add):

../WebKit/gtk: 

Update already-used function names:
* webkit/webkiticondatabase.cpp:
(webkit_icon_database_get_icon_uri):
(webkit_icon_database_get_icon_pixbuf):
* webkit/webkitwebview.cpp:
(webkit_web_view_get_icon_uri):

../WebKit/mac: 

Update already-used function names:
* Misc/WebIconDatabase.mm:
(-[WebIconDatabase iconForURL:withSize:cache:]):
(-[WebIconDatabase iconURLForURL:]):
* WebView/WebView.mm:
(-[WebView _dispatchDidReceiveIconFromWebFrame:]):

../WebKit/qt: 

Update already-used function names:
* Api/qwebhistory.cpp:
(QWebHistoryItem::icon):
* Api/qwebsettings.cpp:
(QWebSettings::iconForUrl):

../WebKit/win: 

Update already-used function names:
* WebIconDatabase.cpp:
(WebIconDatabase::iconForURL):
(WebIconDatabase::iconURLForURL):
(WebIconDatabase::hasIconForURL):

../WebKit2: 

-Update the synchronous method names to be prefixed with "synchronous."
-Add empty implementations for the asynchronous accessors.

* WebProcess/IconDatabase/WebIconDatabaseProxy.cpp:
(WebKit::WebIconDatabaseProxy::setEnabled):
(WebKit::WebIconDatabaseProxy::synchronousIconForPageURL):
(WebKit::WebIconDatabaseProxy::synchronousIconURLForPageURL):
(WebKit::WebIconDatabaseProxy::synchronousIconDataKnownForIconURL):
(WebKit::WebIconDatabaseProxy::synchronousLoadDecisionForIconURL):
(WebKit::WebIconDatabaseProxy::supportsAsynchronousMode):
(WebKit::WebIconDatabaseProxy::loadDecisionForIconURL):
(WebKit::WebIconDatabaseProxy::iconDataForIconURL):
* WebProcess/IconDatabase/WebIconDatabaseProxy.h:



git-svn-id: http://svn.webkit.org/repository/webkit/trunk@81484 268f45cc-cd09-0410-ab3c-d52691b4dbfc