Remove --tab-capture-upscale/downscale-quality.

content/browser/compositor/delegated_frame_host.cc

Index: content/browser/compositor/delegated_frame_host.cc
diff --git a/content/browser/compositor/delegated_frame_host.cc b/content/browser/compositor/delegated_frame_host.cc
index 348e436946f935edc45ce61480ebe41ba4f2da83..024396442250587d14f8369b16ed2eef32b5e620 100644
--- a/content/browser/compositor/delegated_frame_host.cc
+++ b/content/browser/compositor/delegated_frame_host.cc
@@ -696,30 +696,8 @@ void DelegatedFrameHost::CopyFromCompositingSurfaceHasResultForVideo(
       yuv_readback_pipeline->scaler()->SrcSize() != result_rect.size() ||
       yuv_readback_pipeline->scaler()->SrcSubrect() != result_rect ||
       yuv_readback_pipeline->scaler()->DstSize() != region_in_frame.size()) {
-    GLHelper::ScalerQuality quality = GLHelper::SCALER_QUALITY_FAST;
-    std::string quality_switch = switches::kTabCaptureDownscaleQuality;
-    // If we're scaling up, we can use the "best" quality.
-    if (result_rect.size().width() < region_in_frame.size().width() &&
-        result_rect.size().height() < region_in_frame.size().height())
-      quality_switch = switches::kTabCaptureUpscaleQuality;
-
-    std::string switch_value =
-        base::CommandLine::ForCurrentProcess()->GetSwitchValueASCII(
-            quality_switch);
-    if (switch_value == "fast")
-      quality = GLHelper::SCALER_QUALITY_FAST;
-    else if (switch_value == "good")
-      quality = GLHelper::SCALER_QUALITY_GOOD;
-    else if (switch_value == "best")
-      quality = GLHelper::SCALER_QUALITY_BEST;
-
-    dfh->yuv_readback_pipeline_.reset(
-        gl_helper->CreateReadbackPipelineYUV(quality,
-                                             result_rect.size(),
-                                             result_rect,
-                                             region_in_frame.size(),
-                                             true,
-                                             true));
+    dfh->yuv_readback_pipeline_.reset(gl_helper->CreateReadbackPipelineYUV(
+        result_rect.size(), result_rect, region_in_frame.size(), true, true));
     yuv_readback_pipeline = dfh->yuv_readback_pipeline_.get();
   }