Remove rendundant WebLocalFrame parameter in various plugin code.

content/shell/test_runner/web_frame_test_proxy.h

Index: content/shell/test_runner/web_frame_test_proxy.h
diff --git a/content/shell/test_runner/web_frame_test_proxy.h b/content/shell/test_runner/web_frame_test_proxy.h
index cd1e517f4b7a75aefa1ba4abd6d06627dbbc8963..a52adee68d0a5dab72b3681a42384f5a8e0be20f 100644
--- a/content/shell/test_runner/web_frame_test_proxy.h
+++ b/content/shell/test_runner/web_frame_test_proxy.h
@@ -58,12 +58,11 @@ class WebFrameTestProxy : public Base, public WebFrameTestProxyBase {
 
   // WebFrameClient implementation.
   blink::WebPlugin* CreatePlugin(
-      blink::WebLocalFrame* frame,
       const blink::WebPluginParams& params) override {
-    blink::WebPlugin* plugin = test_client()->CreatePlugin(frame, params);
+    blink::WebPlugin* plugin = test_client()->CreatePlugin(params);
     if (plugin)
       return plugin;
-    return Base::CreatePlugin(frame, params);
+    return Base::CreatePlugin(params);
   }
 
   blink::WebScreenOrientationClient* GetWebScreenOrientationClient() override {