Log supported camera preview resolutions.

webrtc/api/android/java/src/org/webrtc/VideoCapturerAndroid.java

Index: webrtc/api/android/java/src/org/webrtc/VideoCapturerAndroid.java
diff --git a/webrtc/api/android/java/src/org/webrtc/VideoCapturerAndroid.java b/webrtc/api/android/java/src/org/webrtc/VideoCapturerAndroid.java
index 990563adcaab246af596448e3e210da0537b405a..9f90f5381ff0c7d68f0090cce67f2b2317afd75c 100644
--- a/webrtc/api/android/java/src/org/webrtc/VideoCapturerAndroid.java
+++ b/webrtc/api/android/java/src/org/webrtc/VideoCapturerAndroid.java
@@ -391,8 +391,11 @@ public class VideoCapturerAndroid implements
     final CaptureFormat.FramerateRange fpsRange =
         CameraEnumerationAndroid.getClosestSupportedFramerateRange(supportedFramerates, framerate);
 
-    final Size previewSize = CameraEnumerationAndroid.getClosestSupportedSize(
-        Camera1Enumerator.convertSizes(parameters.getSupportedPreviewSizes()), width, height);
+    final List<Size> supportedPreviewSizes =
+        Camera1Enumerator.convertSizes(parameters.getSupportedPreviewSizes());
+    final Size previewSize =
+        CameraEnumerationAndroid.getClosestSupportedSize(supportedPreviewSizes, width, height);
+    Logging.d(TAG, "Available preview sizes: " + supportedPreviewSizes);
 
     final CaptureFormat captureFormat =
         new CaptureFormat(previewSize.width, previewSize.height, fpsRange);
@@ -432,15 +435,16 @@ public class VideoCapturerAndroid implements
       camera.setPreviewCallbackWithBuffer(null);
     }
 
-    // (Re)start preview.
-    Logging.d(TAG, "Start capturing: " + captureFormat);
-    this.captureFormat = captureFormat;
-
     List<String> focusModes = parameters.getSupportedFocusModes();
     if (focusModes.contains(android.hardware.Camera.Parameters.FOCUS_MODE_CONTINUOUS_VIDEO)) {
+      Logging.d(TAG, "Enable continuous auto focus mode.");
       parameters.setFocusMode(android.hardware.Camera.Parameters.FOCUS_MODE_CONTINUOUS_VIDEO);
     }
 
+    // (Re)start preview.
+    Logging.d(TAG, "Start capturing: " + captureFormat);
+    this.captureFormat = captureFormat;
+
     camera.setParameters(parameters);
     // Calculate orientation manually and send it as CVO instead.
     camera.setDisplayOrientation(0 /* degrees */);