Add a name to the previously-unnamed thread created by SoundPoolThread.

SoundPool itself also creates a thread, which was called "SoundPoolThread", unrelated to the SoundPoolThread class.  The SoundPoolThread class then created an unnamed thread, which showed up as "android:unnamed_thread".  That's confusing, so this change renames the SoundPool thread to "SoundPool" and then names the SoundPoolThread thread as "SoundPoolThread".  Say that ten times fast :)

Change-Id: I67b7e644a30c94b6eda44bf970764a52a1c2958b
diff --git a/media/jni/soundpool/SoundPool.cpp b/media/jni/soundpool/SoundPool.cpp
index 2012b3d..fef880b 100644
--- a/media/jni/soundpool/SoundPool.cpp
+++ b/media/jni/soundpool/SoundPool.cpp
@@ -144,7 +144,7 @@
 
 bool SoundPool::startThreads()
 {
-    createThreadEtc(beginThread, this, "SoundPoolThread");
+    createThreadEtc(beginThread, this, "SoundPool");
     if (mDecodeThread == NULL)
         mDecodeThread = new SoundPoolThread(this);
     return mDecodeThread != NULL;
@@ -827,4 +827,3 @@
 }
 
 } // end namespace android
-
diff --git a/media/jni/soundpool/SoundPoolThread.cpp b/media/jni/soundpool/SoundPoolThread.cpp
index e32c794..275c519 100644
--- a/media/jni/soundpool/SoundPoolThread.cpp
+++ b/media/jni/soundpool/SoundPoolThread.cpp
@@ -62,7 +62,7 @@
     mSoundPool(soundPool)
 {
     mMsgQueue.setCapacity(maxMessages);
-    if (createThread(beginThread, this)) {
+    if (createThreadEtc(beginThread, this, "SoundPoolThread")) {
         mRunning = true;
     }
 }