Fix reversed DCHECK() in ScreenOrientationProvider.

content/public/browser/screen_orientation_provider.cc

 // Copyright 2014 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #include "content/public/browser/screen_orientation_provider.h"
 
 #include "base/callback_helpers.h"
 #include "base/optional.h"
 #include "content/browser/renderer_host/render_view_host_impl.h"
 #include "content/browser/web_contents/web_contents_impl.h"
@@ skipping 10 matching lines @@
 
 ScreenOrientationProvider::ScreenOrientationProvider(WebContents* web_contents)
     : WebContentsObserver(web_contents), lock_applied_(false) {}
 
 ScreenOrientationProvider::~ScreenOrientationProvider() {
 }
 
 void ScreenOrientationProvider::LockOrientation(
     blink::WebScreenOrientationLockType orientation,
     const LockOrientationCallback& callback) {
-  // ScreenOrientation should have cancelled all pending request at thie point.
+  // ScreenOrientation should have cancelled all pending request at this point.
   DCHECK(on_result_callback_.is_null());
-  DCHECK(pending_lock_orientation_.has_value());
-  DCHECK(pending_lock_orientation_.value() >= 0);
+  DCHECK(!pending_lock_orientation_.has_value());
   on_result_callback_ = callback;
 
   if (!delegate_ || !delegate_->ScreenOrientationProviderSupported()) {
     NotifyLockResult(ScreenOrientationLockResult::
                          SCREEN_ORIENTATION_LOCK_RESULT_ERROR_NOT_AVAILABLE);
     return;
   }
 
   if (delegate_->FullScreenRequired(web_contents())) {
     RenderViewHostImpl* rvhi =
@@ skipping 156 matching lines @@
     case blink::WebScreenOrientationLockDefault:
       NOTREACHED();
       return false;
   }
 
   NOTREACHED();
   return false;
 }
 
 } // namespace content