VP9: Set speed setting to 8 for ARM.

webrtc/modules/video_coding/codecs/vp9/vp9_impl.cc

Index: webrtc/modules/video_coding/codecs/vp9/vp9_impl.cc
diff --git a/webrtc/modules/video_coding/codecs/vp9/vp9_impl.cc b/webrtc/modules/video_coding/codecs/vp9/vp9_impl.cc
index 7833ded6413879945365b3c19b666cac329ba2b0..21096bd82eb37c09f0d9d6350e47e9ef62074406 100644
--- a/webrtc/modules/video_coding/codecs/vp9/vp9_impl.cc
+++ b/webrtc/modules/video_coding/codecs/vp9/vp9_impl.cc
@@ -36,12 +36,16 @@ namespace webrtc {
 // Only positive speeds, range for real-time coding currently is: 5 - 8.
 // Lower means slower/better quality, higher means fastest/lower quality.
 int GetCpuSpeed(int width, int height) {
+#if defined(WEBRTC_ARCH_ARM) || defined(WEBRTC_ARCH_ARM64)
+  return 8;
+#else
   // For smaller resolutions, use lower speed setting (get some coding gain at
   // the cost of increased encoding complexity).
   if (width * height <= 352 * 288)
     return 5;
   else
     return 7;
+#endif
 }
 
 VP9Encoder* VP9Encoder::Create() {