Blink: Replace all "plug-in" with "plugin".

Source/web/WebViewImpl.cpp

Index: Source/web/WebViewImpl.cpp
diff --git a/Source/web/WebViewImpl.cpp b/Source/web/WebViewImpl.cpp
index d29762a542e86477f395a81364a1555195b30fbc..8a2abf74f1cd0fa7e36178bafbd67ddbc50ed2bb 100644
--- a/Source/web/WebViewImpl.cpp
+++ b/Source/web/WebViewImpl.cpp
@@ -1052,7 +1052,7 @@ bool WebViewImpl::handleKeyEvent(const WebKeyboardEvent& event)
 
     if (frame->eventHandler().keyEvent(evt)) {
         if (WebInputEvent::RawKeyDown == event.type) {
-            // Suppress the next keypress event unless the focused node is a plug-in node.
+            // Suppress the next keypress event unless the focused node is a plugin node.
             // (Flash needs these keypress events to handle non-US keyboards.)
             Element* element = focusedElement();
             if (!element || !element->layoutObject() || !element->layoutObject()->isEmbeddedObject())