Remove flag --disable-winsta

BUG=378462

Review URL: https://codereview.chromium.org/301353004

git-svn-id: svn://svn.chromium.org/chrome/trunk/src@273975 0039d316-1c4b-4281-b951-d872f2087c98

content/common/sandbox_init_win.cc

@@ -25,11 +25,9 @@ bool InitializeSandbox(sandbox::SandboxInterfaceInfo* sandbox_info) {
     // process to swap its window station. During this time all the UI will be
     // broken. This has to run before threads and windows are created.
     if (!command_line.HasSwitch(switches::kNoSandbox)) {
-      bool use_winsta = !command_line.HasSwitch(
-          switches::kDisableAltWinstation);
       // Precreate the desktop and window station used by the renderers.
       sandbox::TargetPolicy* policy = broker_services->CreatePolicy();
-      sandbox::ResultCode result = policy->CreateAlternateDesktop(use_winsta);
+      sandbox::ResultCode result = policy->CreateAlternateDesktop(true);
       CHECK(sandbox::SBOX_ERROR_FAILED_TO_SWITCH_BACK_WINSTATION != result);
       policy->Release();
     }

content/common/sandbox_win.cc

@@ -358,10 +358,7 @@ bool AddPolicyForSandboxedProcess(sandbox::TargetPolicy* policy) {
   // Prevents the renderers from manipulating low-integrity processes.
   policy->SetDelayedIntegrityLevel(sandbox::INTEGRITY_LEVEL_UNTRUSTED);
 
-  bool use_winsta = !CommandLine::ForCurrentProcess()->HasSwitch(
-                        switches::kDisableAltWinstation);
-
-  if (sandbox::SBOX_ALL_OK !=  policy->SetAlternateDesktop(use_winsta)) {
+  if (sandbox::SBOX_ALL_OK !=  policy->SetAlternateDesktop(true)) {
     DLOG(WARNING) << "Failed to apply desktop security to the renderer";
   }
 

content/public/common/content_switches.cc

@@ -98,9 +98,6 @@ const char kDisableLayerSquashing[] =
 const char kDisableAcceleratedVideoDecode[] =
     "disable-accelerated-video-decode";
 
-// Disables the alternate window station for the renderer.
-const char kDisableAltWinstation[]          = "disable-winsta";
-
 // Disable the ApplicationCache.
 const char kDisableApplicationCache[]       = "disable-application-cache";
 

content/public/common/content_switches.h

@@ -37,7 +37,6 @@ CONTENT_EXPORT extern const char kDisableAcceleratedFixedRootBackground[];
 CONTENT_EXPORT extern const char kDisableAcceleratedOverflowScroll[];
 CONTENT_EXPORT extern const char kDisableLayerSquashing[];
 CONTENT_EXPORT extern const char kDisableAcceleratedVideoDecode[];
-CONTENT_EXPORT extern const char kDisableAltWinstation[];
 CONTENT_EXPORT extern const char kDisableApplicationCache[];
 extern const char kDisableBackingStoreLimit[];
 CONTENT_EXPORT extern const char kDisableCompositingForFixedPosition[];