Minor cleanups in media/s BUILD.gns and media/capture files

media/capture/content/android/screen_capture_machine_android.h

 // Copyright 2016 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 MEDIA_CAPTURE_CONTENT_ANDROID_SCREEN_CAPTURE_MACHINE_ANDROID_H_
 #define MEDIA_CAPTURE_CONTENT_ANDROID_SCREEN_CAPTURE_MACHINE_ANDROID_H_
 
 #include <jni.h>
 #include <memory>
 
 #include "base/android/scoped_java_ref.h"
 #include "media/capture/content/screen_capture_device_core.h"
 
 namespace media {
 
 // ScreenCaptureMachineAndroid captures 32bit RGB or YUV420 triplanar.
-class MEDIA_EXPORT ScreenCaptureMachineAndroid
-    : public media::VideoCaptureMachine {
+class ScreenCaptureMachineAndroid : public media::VideoCaptureMachine {
  public:
   ScreenCaptureMachineAndroid();
   ~ScreenCaptureMachineAndroid() override;
 
   static bool RegisterScreenCaptureMachine(JNIEnv* env);
   static base::android::ScopedJavaLocalRef<jobject>
   createScreenCaptureMachineAndroid(jlong nativeScreenCaptureMachineAndroid);
 
   // Implement org.chromium.media.ScreenCapture.nativeOnRGBAFrameAvailable.
   void OnRGBAFrameAvailable(JNIEnv* env,
@@ skipping 39 matching lines @@
 
   // Java VideoCaptureAndroid instance.
   base::android::ScopedJavaLocalRef<jobject> j_capture_;
 
   DISALLOW_COPY_AND_ASSIGN(ScreenCaptureMachineAndroid);
 };
 
 }  // namespace media
 
 #endif  // MEDIA_CAPTURE_CONTENT_ANDROID_SCREEN_CAPTURE_MACHINE_ANDROID_H_