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

LayoutTests/plugins/plugin-initiate-popup-window.html

Index: LayoutTests/plugins/plugin-initiate-popup-window.html
diff --git a/LayoutTests/plugins/plugin-initiate-popup-window.html b/LayoutTests/plugins/plugin-initiate-popup-window.html
index 9be0f9b1b0c7b09bd15f02f5de08a89fdaaefb35..080120a2db4afb5b1dc8a010ef5252548ba10e90 100644
--- a/LayoutTests/plugins/plugin-initiate-popup-window.html
+++ b/LayoutTests/plugins/plugin-initiate-popup-window.html
@@ -15,7 +15,7 @@ function test() {
     // Record current window count.
     window.windowCount = window.testRunner.windowCount();
     console.log("window count: " + window.testRunner.windowCount());
-    // Send a mouse-click event to set the input focus to the test plug-in.
+    // Send a mouse-click event to set the input focus to the test plugin.
     eventSender.mouseMoveTo(0, 0);
     eventSender.mouseMoveTo(20, 20);
     eventSender.mouseDown();
@@ -36,7 +36,7 @@ function popup_by_mousedown() {
 }
 
 function send_key_to_plugin() {
-    // Send keyboard events to the plug-in.
+    // Send keyboard events to the plugin.
     eventSender.mouseMoveTo(0, 0);
     eventSender.mouseMoveTo(60, 60);
     eventSender.mouseDown();