Use android Nullable instead of javax Nullable

This is a propagation of upstream chromium change needed to
resume DEPS autorolls into WebRTC.

Original comment from upstream change:

> This change is made in preparation for an ErrorProne
> check to catch this at compile time. See bug for details.

Bug: chromium:771683
Change-Id: I56aed15f73a633dcadae7ece6c645cd3596f9257
Reviewed-on: https://webrtc-review.googlesource.com/c/113505
Reviewed-by: Oleh Prypin <oprypin@webrtc.org>
Reviewed-by: Henrik Andreassson <henrika@webrtc.org>
Reviewed-by: Sami Kalliomäki <sakal@webrtc.org>
Commit-Queue: Artem Titarenko <artit@webrtc.org>
Cr-Commit-Position: refs/heads/master@{#25951}

sdk/android/src/java/org/webrtc/AndroidVideoDecoder.java

@@ -15,13 +15,13 @@ import android.media.MediaCodec;
 import android.media.MediaCodecInfo.CodecCapabilities;
 import android.media.MediaFormat;
 import android.os.SystemClock;
+import android.support.annotation.Nullable;
 import android.view.Surface;
 import java.io.IOException;
 import java.nio.ByteBuffer;
 import java.util.concurrent.BlockingDeque;
 import java.util.concurrent.LinkedBlockingDeque;
 import java.util.concurrent.TimeUnit;
-import javax.annotation.Nullable;
 import org.webrtc.ThreadUtils.ThreadChecker;
 
 /**

sdk/android/src/java/org/webrtc/Camera1Session.java

@@ -11,16 +11,16 @@
 package org.webrtc;
 
 import android.content.Context;
+import android.graphics.Matrix;
 import android.os.Handler;
 import android.os.SystemClock;
+import android.support.annotation.Nullable;
 import android.view.Surface;
 import java.io.IOException;
 import java.nio.ByteBuffer;
 import java.util.List;
 import java.util.concurrent.TimeUnit;
-import javax.annotation.Nullable;
 import org.webrtc.CameraEnumerationAndroid.CaptureFormat;
-import android.graphics.Matrix;
 
 @SuppressWarnings("deprecation")
 class Camera1Session implements CameraSession {

sdk/android/src/java/org/webrtc/Camera2Session.java

@@ -23,7 +23,7 @@ import android.hardware.camera2.CameraMetadata;
 import android.hardware.camera2.CaptureFailure;
 import android.hardware.camera2.CaptureRequest;
 import android.os.Handler;
-import javax.annotation.Nullable;
+import android.support.annotation.Nullable;
 import android.util.Range;
 import android.view.Surface;
 import java.util.Arrays;

sdk/android/src/java/org/webrtc/CameraCapturer.java

@@ -13,8 +13,8 @@ package org.webrtc;
 import android.content.Context;
 import android.os.Handler;
 import android.os.Looper;
+import android.support.annotation.Nullable;
 import java.util.Arrays;
-import javax.annotation.Nullable;
 
 @SuppressWarnings("deprecation")
 abstract class CameraCapturer implements CameraVideoCapturer {

sdk/android/src/java/org/webrtc/EglBase10.java

@@ -13,7 +13,7 @@ package org.webrtc;
 import android.graphics.Canvas;
 import android.graphics.Rect;
 import android.graphics.SurfaceTexture;
-import javax.annotation.Nullable;
+import android.support.annotation.Nullable;
 import android.view.Surface;
 import android.view.SurfaceHolder;
 import javax.microedition.khronos.egl.EGL10;

sdk/android/src/java/org/webrtc/EglBase14.java

@@ -19,7 +19,7 @@ import android.opengl.EGLDisplay;
 import android.opengl.EGLExt;
 import android.opengl.EGLSurface;
 import android.os.Build;
-import javax.annotation.Nullable;
+import android.support.annotation.Nullable;
 import android.view.Surface;
 import org.webrtc.EglBase;
 

sdk/android/src/java/org/webrtc/GlGenericDrawer.java

@@ -12,8 +12,8 @@ package org.webrtc;
 
 import android.opengl.GLES11Ext;
 import android.opengl.GLES20;
+import android.support.annotation.Nullable;
 import java.nio.FloatBuffer;
-import javax.annotation.Nullable;
 import org.webrtc.GlShader;
 import org.webrtc.GlUtil;
 import org.webrtc.RendererCommon;

sdk/android/src/java/org/webrtc/HardwareVideoEncoder.java

@@ -17,6 +17,7 @@ import android.media.MediaCodecInfo;
 import android.media.MediaFormat;
 import android.opengl.GLES20;
 import android.os.Bundle;
+import android.support.annotation.Nullable;
 import android.view.Surface;
 import java.io.IOException;
 import java.nio.ByteBuffer;
@@ -25,7 +26,6 @@ import java.util.Map;
 import java.util.concurrent.BlockingDeque;
 import java.util.concurrent.LinkedBlockingDeque;
 import java.util.concurrent.TimeUnit;
-import javax.annotation.Nullable;
 import org.webrtc.ThreadUtils.ThreadChecker;
 
 /**

sdk/android/src/java/org/webrtc/MediaCodecUtils.java

@@ -15,9 +15,9 @@ import android.media.MediaCodec;
 import android.media.MediaCodecInfo;
 import android.media.MediaCodecInfo.CodecCapabilities;
 import android.os.Build;
+import android.support.annotation.Nullable;
 import java.util.HashMap;
 import java.util.Map;
-import javax.annotation.Nullable;
 
 /** Container class for static constants and helpers used with MediaCodec. */
 // We are forced to use the old API because we want to support API level < 21.

sdk/android/src/java/org/webrtc/MediaCodecVideoDecoderFactory.java

@@ -17,10 +17,10 @@ import android.media.MediaCodecInfo;
 import android.media.MediaCodecInfo.CodecCapabilities;
 import android.media.MediaCodecList;
 import android.os.Build;
+import android.support.annotation.Nullable;
 import java.util.ArrayList;
 import java.util.Arrays;
 import java.util.List;
-import javax.annotation.Nullable;
 
 /** Factory for decoders backed by Android MediaCodec API. */
 @SuppressWarnings("deprecation") // API level 16 requires use of deprecated methods.

sdk/android/src/java/org/webrtc/NV12Buffer.java

@@ -10,8 +10,8 @@
 
 package org.webrtc;
 
+import android.support.annotation.Nullable;
 import java.nio.ByteBuffer;
-import javax.annotation.Nullable;
 
 public class NV12Buffer implements VideoFrame.Buffer {
   private final int width;

sdk/android/src/java/org/webrtc/NV21Buffer.java

@@ -10,9 +10,9 @@
 
 package org.webrtc;
 
+import android.support.annotation.Nullable;
 import java.nio.ByteBuffer;
 import java.util.concurrent.atomic.AtomicInteger;
-import javax.annotation.Nullable;
 
 public class NV21Buffer implements VideoFrame.Buffer {
   private final byte[] data;

sdk/android/src/java/org/webrtc/NativeCapturerObserver.java

@@ -10,7 +10,7 @@
 
 package org.webrtc;
 
-import javax.annotation.Nullable;
+import android.support.annotation.Nullable;
 import org.webrtc.VideoFrame;
 
 /**

sdk/android/src/java/org/webrtc/RefCountDelegate.java

@@ -10,8 +10,8 @@
 
 package org.webrtc;
 
+import android.support.annotation.Nullable;
 import java.util.concurrent.atomic.AtomicInteger;
-import javax.annotation.Nullable;
 
 /**
  * Implementation of RefCounted that executes a Runnable once the ref count reaches zero.

sdk/android/src/java/org/webrtc/VideoEncoderWrapper.java

@@ -11,9 +11,9 @@
 package org.webrtc;
 
 // Explicit imports necessary for JNI generation.
-import javax.annotation.Nullable;
-import org.webrtc.VideoEncoder;
+import android.support.annotation.Nullable;
 import java.nio.ByteBuffer;
+import org.webrtc.VideoEncoder;
 
 /**
  * This class contains the Java glue code for JNI generation of VideoEncoder.

sdk/android/src/java/org/webrtc/audio/VolumeLogger.java

@@ -11,9 +11,9 @@
 package org.webrtc.audio;
 
 import android.media.AudioManager;
+import android.support.annotation.Nullable;
 import java.util.Timer;
 import java.util.TimerTask;
-import javax.annotation.Nullable;
 import org.webrtc.Logging;
 
 // TODO(magjed): Do we really need to spawn a new thread just to log volume? Can we re-use the

sdk/android/src/java/org/webrtc/audio/WebRtcAudioEffects.java

@@ -16,9 +16,9 @@ import android.media.audiofx.AudioEffect.Descriptor;
 import android.media.audiofx.AutomaticGainControl;
 import android.media.audiofx.NoiseSuppressor;
 import android.os.Build;
+import android.support.annotation.Nullable;
 import java.util.List;
 import java.util.UUID;
-import javax.annotation.Nullable;
 import org.webrtc.Logging;
 
 // This class wraps control of three different platform effects. Supported

sdk/android/src/java/org/webrtc/audio/WebRtcAudioRecord.java

@@ -17,11 +17,11 @@ import android.media.AudioRecord;
 import android.media.MediaRecorder.AudioSource;
 import android.os.Build;
 import android.os.Process;
+import android.support.annotation.Nullable;
 import java.lang.System;
 import java.nio.ByteBuffer;
 import java.util.Arrays;
 import java.util.concurrent.TimeUnit;
-import javax.annotation.Nullable;
 import org.webrtc.CalledByNative;
 import org.webrtc.Logging;
 import org.webrtc.ThreadUtils;

sdk/android/src/java/org/webrtc/audio/WebRtcAudioTrack.java

@@ -18,9 +18,9 @@ import android.media.AudioManager;
 import android.media.AudioTrack;
 import android.os.Build;
 import android.os.Process;
+import android.support.annotation.Nullable;
 import java.lang.Thread;
 import java.nio.ByteBuffer;
-import javax.annotation.Nullable;
 import org.webrtc.CalledByNative;
 import org.webrtc.Logging;
 import org.webrtc.ThreadUtils;