Remove references to WebMidiClientMock from content/.

content/shell/renderer/test_runner/web_frame_test_proxy.h

 // Copyright 2014 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.
 
 #ifndef CONTENT_SHELL_RENDERER_TEST_RUNNER_WEB_FRAME_TEST_PROXY_H_
 #define CONTENT_SHELL_RENDERER_TEST_RUNNER_WEB_FRAME_TEST_PROXY_H_
 
 #include "base/basictypes.h"
 #include "content/shell/renderer/test_runner/mock_screen_orientation_client.h"
 #include "content/shell/renderer/test_runner/test_interfaces.h"
@@ skipping 248 matching lines @@
       blink::WebLocalFrame* frame,
       blink::WebRTCPeerConnectionHandler* handler) {
     // RenderFrameImpl::willStartUsingPeerConnectionHandler can not be mocked.
     // See http://crbug/363285.
   }
 
   virtual blink::WebUserMediaClient* userMediaClient() {
     return base_proxy_->GetUserMediaClient();
   }
 
-  virtual blink::WebMIDIClient* webMIDIClient() {
-    return base_proxy_->GetWebMIDIClient();
-  }
-
   virtual bool willCheckAndDispatchMessageEvent(
       blink::WebLocalFrame* source_frame,
       blink::WebFrame* target_frame,
       blink::WebSecurityOrigin target,
       blink::WebDOMMessageEvent event) {
     if (base_proxy_->WillCheckAndDispatchMessageEvent(
             source_frame, target_frame, target, event))
       return true;
     return Base::willCheckAndDispatchMessageEvent(
         source_frame, target_frame, target, event);
@@ skipping 14 matching lines @@
 #endif
 
   WebTestProxyBase* base_proxy_;
 
   DISALLOW_COPY_AND_ASSIGN(WebFrameTestProxy);
 };
 
 }  // namespace content
 
 #endif  // CONTENT_SHELL_RENDERER_TEST_RUNNER_WEB_FRAME_TEST_PROXY_H_