Merge "Speed up SimpleDecodingSource"

using namespace android;

const int64_t kTimeoutWaitForOutputUs = 500000; // 0.5 seconds

const int64_t kTimeoutWaitForInputUs = 5000; // 5 milliseconds

const int64_t kTimeoutWaitForInputUs = 0; // don't wait

const int kTimeoutMaxRetries = 20;

//static