Catch runtime exception when creating MediaThrottler

MediaPlayer.create() can throw Runtime exception.
Catch the exception to prevent app crash.

BUG=579702

Review URL: https://codereview.chromium.org/1611193004

Cr-Commit-Position: refs/heads/master@{#370783}

content/public/android/java/src/org/chromium/content/browser/MediaThrottler.java

@@ -107,6 +107,8 @@ class MediaThrottler implements MediaPlayer.OnErrorListener {
                     mPlayer = MediaPlayer.create(mContext, R.raw.empty);
                 } catch (IllegalStateException e) {
                     Log.e(TAG, "Exception happens while creating the watch dog player.", e);
+                } catch (RuntimeException e) {
+                    Log.e(TAG, "Exception happens while creating the watch dog player.", e);
                 }
                 if (mPlayer == null) {
                     Log.e(TAG, "Unable to create watch dog player, treat it as server crash.");