Enable reduced framerate on headless chromecast devices

Removes experiment, enables 4hz framerate on all headless
chromecast devices.

Bug: b/139299756
Test: Locally on device
Change-Id: I8d6b9b1010c186837b16edffced8d7dc7cac6f3b
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/2376459Reviewed-by: Michael Spang <spang@chromium.org>
Commit-Queue: Shawn Gallea <sagallea@google.com>
Cr-Commit-Position: refs/heads/master@{#801628}

chromecast/base/cast_features.cc

@@ -158,10 +158,6 @@ const base::Feature kUseQueryableDataBackend{"use_queryable_data_backend",
 const base::Feature kEnableSideGesturePassThrough{
     "enable_side_gesture_pass_through", base::FEATURE_DISABLED_BY_DEFAULT};
 
-// Lowers frame rate for headless
-const base::Feature kReduceHeadlessFrameRate{"reduce_headless_frame_rate",
-                                             base::FEATURE_DISABLED_BY_DEFAULT};
-
 // Uses AudioManagerAndroid, instead of CastAudioManagerAndroid. This will
 // disable lots of Cast features, so it should only be used for development and
 // testing.
@@ -178,7 +174,6 @@ const base::Feature* kFeatures[] = {
     &kEnableGeneralAudienceBrowsing,
     &kUseQueryableDataBackend,
     &kEnableSideGesturePassThrough,
-    &kReduceHeadlessFrameRate,
     &kEnableChromeAudioManagerAndroid,
 };
 

chromecast/base/cast_features.h

@@ -31,7 +31,6 @@ extern const base::Feature kDisableIdleSocketsCloseOnMemoryPressure;
 extern const base::Feature kEnableGeneralAudienceBrowsing;
 extern const base::Feature kUseQueryableDataBackend;
 extern const base::Feature kEnableSideGesturePassThrough;
-extern const base::Feature kReduceHeadlessFrameRate;
 extern const base::Feature kEnableChromeAudioManagerAndroid;
 
 // Get an iterable list of all of the cast features for checking all features as

chromecast/graphics/cast_window_manager_aura.cc

@@ -4,7 +4,6 @@
 
 #include "chromecast/graphics/cast_window_manager_aura.h"
 
-#include "base/feature_list.h"
 #include "base/memory/ptr_util.h"
 #include "build/build_config.h"
 #include "chromecast/base/cast_features.h"
@@ -236,11 +235,8 @@ void CastWindowManagerAura::Setup() {
   rounded_window_corners_ = RoundedWindowCorners::Create(this);
 
 #if BUILDFLAG(IS_CAST_AUDIO_ONLY)
-  if (base::FeatureList::IsEnabled(kReduceHeadlessFrameRate)) {
-    ui::Compositor* compositor = window_tree_host_->compositor();
-    compositor->SetDisplayVSyncParameters(
-        base::TimeTicks(), base::TimeDelta::FromMilliseconds(250));
-  }
+  window_tree_host_->compositor()->SetDisplayVSyncParameters(
+      base::TimeTicks(), base::TimeDelta::FromMilliseconds(250));
 #endif
 }