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

content/common/gpu/client/gl_helper.cc

Index: content/common/gpu/client/gl_helper.cc
diff --git a/content/common/gpu/client/gl_helper.cc b/content/common/gpu/client/gl_helper.cc
index 5549caaacb88bd8650c4d2dc84d6cf87ffcacdb0..ca3e9a3c11647379b3557fe5205c9c0e36ab4e7b 100644
--- a/content/common/gpu/client/gl_helper.cc
+++ b/content/common/gpu/client/gl_helper.cc
@@ -189,7 +189,6 @@ class GLHelper::CopyTextureToImpl
                              GLHelper::ScalerQuality quality);
 
   ReadbackYUVInterface* CreateReadbackPipelineYUV(
-      GLHelper::ScalerQuality quality,
       const gfx::Size& src_size,
       const gfx::Rect& src_subrect,
       const gfx::Size& dst_size,
@@ -1330,7 +1329,6 @@ bool GLHelper::IsReadbackConfigSupported(SkColorType color_type) {
 }
 
 ReadbackYUVInterface* GLHelper::CopyTextureToImpl::CreateReadbackPipelineYUV(
-    GLHelper::ScalerQuality quality,
     const gfx::Size& src_size,
     const gfx::Rect& src_subrect,
     const gfx::Size& dst_size,
@@ -1350,6 +1348,10 @@ ReadbackYUVInterface* GLHelper::CopyTextureToImpl::CreateReadbackPipelineYUV(
   if (supported == GLHelperReadbackSupport::SWIZZLE)
     swizzle = kSwizzleBGRA;
 
+  GLHelper::ScalerQuality quality = ((src_size.width() < dst_size.width()) &&
+                                     (src_size.height() < dst_size.height()))
+                                        ? GLHelper::SCALER_QUALITY_BEST
+                                        : GLHelper::SCALER_QUALITY_FAST;
   if (max_draw_buffers_ >= 2 && use_mrt) {
     return new ReadbackYUV_MRT(gl_,
                                this,
@@ -1373,19 +1375,14 @@ ReadbackYUVInterface* GLHelper::CopyTextureToImpl::CreateReadbackPipelineYUV(
 }
 
 ReadbackYUVInterface* GLHelper::CreateReadbackPipelineYUV(
-    ScalerQuality quality,
     const gfx::Size& src_size,
     const gfx::Rect& src_subrect,
     const gfx::Size& dst_size,
     bool flip_vertically,
     bool use_mrt) {
   InitCopyTextToImpl();
-  return copy_texture_to_impl_->CreateReadbackPipelineYUV(quality,
-                                                          src_size,
-                                                          src_subrect,
-                                                          dst_size,
-                                                          flip_vertically,
-                                                          use_mrt);
+  return copy_texture_to_impl_->CreateReadbackPipelineYUV(
+      src_size, src_subrect, dst_size, flip_vertically, use_mrt);
 }
 
 }  // namespace content