Disable dynamic decoder selection by default

This CL changes the "ResolutionBasedDecoderPriority" feature to be
disabled by default, so that the remaining issues can be resolved
before launch.

Bug: 1110395
Change-Id: Id47f023850f2f082cb7338d87ec4949f122656d9
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/2364962
Commit-Queue: Will Cassella <cassew@google.com>
Commit-Queue: Dale Curtis <dalecurtis@chromium.org>
Reviewed-by: Dale Curtis <dalecurtis@chromium.org>
Cr-Commit-Position: refs/heads/master@{#799902}

media/base/media_switches.cc

@@ -499,7 +499,7 @@ const base::Feature kHardwareMediaKeyHandling {
 // Enables a platform-specific resolution cutoff for prioritizing platform
 // decoders over software decoders or vice-versa.
 const base::Feature kResolutionBasedDecoderPriority{
-    "ResolutionBasedDecoderPriority", base::FEATURE_ENABLED_BY_DEFAULT};
+    "ResolutionBasedDecoderPriority", base::FEATURE_DISABLED_BY_DEFAULT};
 
 // Enables low-delay video rendering in media pipeline on "live" stream.
 const base::Feature kLowDelayVideoRenderingOnLiveStream{