Remove DATABASE_PROCESS build flag.

Remove DATABASE_PROCESS build flag.
https://bugs.webkit.org/show_bug.cgi?id=174868

Reviewed by Andy Estes.

.:

* Source/cmake/OptionsGTK.cmake:
* Source/cmake/OptionsMac.cmake:
* Source/cmake/OptionsWPE.cmake:
* Source/cmake/WebKitFeatures.cmake:

Source/WebKit:

* CMakeLists.txt:
* DatabaseProcess/DatabaseProcess.cpp:
* DatabaseProcess/DatabaseProcess.h:
* DatabaseProcess/DatabaseProcess.messages.in:
* DatabaseProcess/DatabaseToWebProcessConnection.cpp:
* DatabaseProcess/DatabaseToWebProcessConnection.h:
* DatabaseProcess/DatabaseToWebProcessConnection.messages.in:
* DatabaseProcess/IndexedDB/WebIDBConnectionToClient.messages.in:
* DatabaseProcess/gtk/DatabaseProcessMainGtk.cpp:
* DatabaseProcess/ios/DatabaseProcessIOS.mm:
* DatabaseProcess/mac/DatabaseProcessMac.mm:
* DatabaseProcess/unix/DatabaseProcessMainUnix.h:
* Shared/Databases/DatabaseProcessCreationParameters.cpp:
* Shared/Databases/DatabaseProcessCreationParameters.h:
* Shared/ProcessExecutablePath.h:
* Shared/gtk/ProcessExecutablePathGtk.cpp:
(WebKit::executablePathOfDatabaseProcess):
* Shared/wpe/ProcessExecutablePathWPE.cpp:
(WebKit::executablePathOfDatabaseProcess):
* UIProcess/ChildProcessProxy.cpp:
(WebKit::ChildProcessProxy::getLaunchOptions):
* UIProcess/Databases/DatabaseProcessProxy.cpp:
* UIProcess/Databases/DatabaseProcessProxy.h:
* UIProcess/Databases/DatabaseProcessProxy.messages.in:
* UIProcess/Launcher/ProcessLauncher.h:
* UIProcess/Launcher/gtk/ProcessLauncherGtk.cpp:
(WebKit::ProcessLauncher::launchProcess):
* UIProcess/Launcher/mac/ProcessLauncherMac.mm:
(WebKit::serviceName):
* UIProcess/Launcher/wpe/ProcessLauncherWPE.cpp:
(WebKit::ProcessLauncher::launchProcess):
* UIProcess/Network/NetworkProcessProxy.cpp:
(WebKit::NetworkProcessProxy::grantSandboxExtensionsToDatabaseProcessForBlobs):
* UIProcess/WebProcessPool.cpp:
(WebKit::WebProcessPool::databaseProcessCrashed):
(WebKit::WebProcessPool::databaseProcessIdentifier):
(WebKit::WebProcessPool::terminateDatabaseProcess):
* UIProcess/WebProcessPool.h:
(WebKit::WebProcessPool::sendToDatabaseProcessRelaunchingIfNecessary):
* UIProcess/WebProcessProxy.cpp:
(WebKit::WebProcessProxy::getDatabaseProcessConnection):
* UIProcess/WebProcessProxy.h:
* UIProcess/WebProcessProxy.messages.in:
* UIProcess/WebsiteData/WebsiteDataStore.cpp:
(WebKit::WebsiteDataStore::fetchDataAndApply):
(WebKit::WebsiteDataStore::removeData):
* WebKit2Prefix.h:
* WebProcess/Databases/IndexedDB/WebIDBConnectionToServer.messages.in:
* WebProcess/Databases/WebToDatabaseProcessConnection.cpp:
* WebProcess/Databases/WebToDatabaseProcessConnection.h:
* WebProcess/WebProcess.cpp:
* WebProcess/WebProcess.h:

git-svn-id: https://svn.webkit.org/repository/webkit/trunk@219960 268f45cc-cd09-0410-ab3c-d52691b4dbfc