Don't call NOTIMPLEMENTED for caps lock state on non-Mac/Win platforms.

third_party/WebKit/Source/core/input/KeyboardEventManager.cpp

 // Copyright 2016 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 "KeyboardEventManager.h"
 
 #include "core/dom/DocumentUserGestureToken.h"
 #include "core/dom/Element.h"
 #include "core/editing/Editor.h"
 #include "core/events/KeyboardEvent.h"
@@ skipping 419 matching lines @@
 
 bool KeyboardEventManager::currentCapsLockState() {
   switch (s_overrideCapsLockState) {
     case OverrideCapsLockState::Default:
 #if OS(WIN)
       // FIXME: Does this even work inside the sandbox?
       return GetKeyState(VK_CAPITAL) & 1;
 #elif OS(MACOSX)
       return GetCurrentKeyModifiers() & alphaLock;
 #else
-      NOTIMPLEMENTED();
+      // Caps lock state use is limited to Mac password input
+      // fields, so just return false. See http://crbug.com/618739.
       return false;
 #endif
     case OverrideCapsLockState::On:
       return true;
     case OverrideCapsLockState::Off:
     default:
       return false;
   }
 }
 
@@ skipping 17 matching lines @@
   if (currentModifiers & ::cmdKey)
     modifiers |= WebInputEvent::MetaKey;
 #else
   // TODO(crbug.com/538289): Implement on other platforms.
   return static_cast<WebInputEvent::Modifiers>(0);
 #endif
   return static_cast<WebInputEvent::Modifiers>(modifiers);
 }
 
 }  // namespace blink