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

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

Index: third_party/WebKit/Source/core/input/KeyboardEventManager.cpp
diff --git a/third_party/WebKit/Source/core/input/KeyboardEventManager.cpp b/third_party/WebKit/Source/core/input/KeyboardEventManager.cpp
index 72f23efaa2e348455e95389a3c6d244515b9c8fb..f45894a8c4d0dc0d1d1c072dbb815575b1855e5a 100644
--- a/third_party/WebKit/Source/core/input/KeyboardEventManager.cpp
+++ b/third_party/WebKit/Source/core/input/KeyboardEventManager.cpp
@@ -437,7 +437,8 @@ bool KeyboardEventManager::currentCapsLockState() {
 #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: