106       x_(random_generator_.Rand(0, width)),  in Square()
107       y_(random_generator_.Rand(0, height)),  in Square()
108       length_(random_generator_.Rand(1, width > 4 ? width / 4 : 1)),  in Square()
109       yuv_y_(random_generator_.Rand(0, 255)),  in Square()
110       yuv_u_(random_generator_.Rand(0, 255)),  in Square()
111       yuv_v_(random_generator_.Rand(0, 255)),  in Square()
112       yuv_a_(random_generator_.Rand(0, 255)) {}  in Square()
121   x_ = (x_ + random_generator_.Rand(0, 4)) % (buffer->width() - length);  in Draw()
122   y_ = (y_ + random_generator_.Rand(0, 4)) % (buffer->height() - length);  in Draw()
235   const int kSquareNum = 1 << (4 + (random_generator_.Rand(0, 3) * 2));  in GenerateNewFrame()
245     int length = random_generator_.Rand(1, width_ > 4 ? width_ / 4 : 1);  in GenerateNewFrame()
250     int x = random_generator_.Rand(0, width_ - length);  in GenerateNewFrame()
251     int y = random_generator_.Rand(0, height_ - length);  in GenerateNewFrame()
252     uint8_t yuv_y = random_generator_.Rand(0, 255);  in GenerateNewFrame()
253     uint8_t yuv_u = random_generator_.Rand(0, 255);  in GenerateNewFrame()
254     uint8_t yuv_v = random_generator_.Rand(0, 255);  in GenerateNewFrame()