Reviewed by Brady.

    Reviewed by Brady.

        - assorted style cleanup of icon loader code:

        - wrapped all implementation files in namespace WebCore {} instead of "using namespace WebCore;" at top
        - split headers to be one per class, to match impl files
        - made files that are purely local in IconDatabase.cpp static
        - make each impl file include config.h as first header (and no config.h includes in other headers)
        - avoid multiple copies of Vector<unsigned char> for image data

        * WebCore.xcodeproj/project.pbxproj:
        * loader/icon/IconDataCache.cpp:
        * loader/icon/IconDataCache.h: Added.
        (WebCore::):
        (WebCore::IconDataCache::getTimestamp):
        (WebCore::IconDataCache::setTimestamp):
        (WebCore::IconDataCache::getIconURL):
        * loader/icon/IconDatabase.cpp:
        (WebCore::IconDatabase::imageDataForIconURL):
        (WebCore::IconDatabase::iconForPageURL):
        (WebCore::pageURLTableIsEmptyQuery):
        (WebCore::imageDataForIconURLQuery):
        (WebCore::timeStampForIconURLQuery):
        (WebCore::iconURLForPageURLQuery):
        (WebCore::forgetPageURLQuery):
        (WebCore::setIconIDForPageURLQuery):
        (WebCore::getIconIDForIconURLQuery):
        (WebCore::addIconForIconURLQuery):
        (WebCore::hasIconForIconURLQuery):
        * loader/icon/IconDatabase.h:
        * loader/icon/SQLDatabase.cpp:
        * loader/icon/SQLDatabase.h:
        * loader/icon/SQLStatement.cpp:
        (WebCore::SQLStatement::getColumnBlobAsVector):
        * loader/icon/SQLStatement.h: Added.
        (WebCore::SQLStatement::isPrepared):
        (WebCore::SQLStatement::prepareAndStep):
        (WebCore::SQLStatement::lastError):
        (WebCore::SQLStatement::lastErrorMsg):
        * loader/icon/SQLTransaction.cpp:
        * loader/icon/SQLTransaction.h: Added.

git-svn-id: https://svn.webkit.org/repository/webkit/trunk@15985 268f45cc-cd09-0410-ab3c-d52691b4dbfc