Cherry pick: VP8: For high overshoot, force drop frame and max-out QP.

source/libvpx/vp8/encoder/onyx_int.h

 /*
  *  Copyright (c) 2010 The WebM project authors. All Rights Reserved.
  *
  *  Use of this source code is governed by a BSD-style license
  *  that can be found in the LICENSE file in the root of the source
  *  tree. An additional intellectual property rights grant can be found
  *  in the file PATENTS.  All contributing project authors may
  *  be found in the AUTHORS file in the root of the source tree.
  */
 
@@ skipping 508 matching lines @@
 
     // Frame counter for the temporal pattern. Counter is rest when the temporal
     // layers are changed dynamically (run-time change).
     unsigned int temporal_pattern_counter;
     // Temporal layer id.
     int temporal_layer_id;
 
     // Measure of average squared difference between source and denoised signal.
     int mse_source_denoised;
 
+    int force_maxqp;
+
 #if CONFIG_MULTITHREAD
     /* multithread data */
     int * mt_current_mb_col;
     int mt_sync_range;
     int b_multi_threaded;
     int encoding_thread_count;
     int b_lpf_running;
 
     pthread_t *h_encoding_thread;
     pthread_t h_filter_thread;
@@ skipping 196 matching lines @@
         if(!lval) \
             vpx_internal_error(&cpi->common.error, VPX_CODEC_MEM_ERROR,\
                                "Failed to allocate "#lval);\
     } while(0)
 #endif
 #ifdef __cplusplus
 }  // extern "C"
 #endif
 
 #endif  // VP8_ENCODER_ONYX_INT_H_