Fix VideoCaptureAndroid, drop frame when switching camera using textures.

talk/app/webrtc/java/android/org/webrtc/VideoCapturerAndroid.java

Index: talk/app/webrtc/java/android/org/webrtc/VideoCapturerAndroid.java
diff --git a/talk/app/webrtc/java/android/org/webrtc/VideoCapturerAndroid.java b/talk/app/webrtc/java/android/org/webrtc/VideoCapturerAndroid.java
index 952bd083959f98488388964d77e53cc0c480d288..af20eabdee3a5efd10125c0d8e9e031d9f49c898 100644
--- a/talk/app/webrtc/java/android/org/webrtc/VideoCapturerAndroid.java
+++ b/talk/app/webrtc/java/android/org/webrtc/VideoCapturerAndroid.java
@@ -747,9 +747,9 @@ public class VideoCapturerAndroid extends VideoCapturer implements
       surfaceHelper.returnTextureFrame();
       return;
     }
-    if (!dropNextFrame)  {
+    if (dropNextFrame)  {
      surfaceHelper.returnTextureFrame();
-     dropNextFrame = true;
+     dropNextFrame = false;
      return;
     }