gpu: Clean up unused partial swap workaround

With crrev.com/c/1830084 we removed the only workaround that was using
disable_non_empty_post_sub_buffers_for_onscreen_surfaces.

This CL cleans up related code.

Bug: 457511
Change-Id: Id2ea16b9ce91e5b59401e253519057c7f45796a3
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/1700562
Auto-Submit: Daniele Castagna <dcastagna@chromium.org>
Reviewed-by: Daniel Cheng <dcheng@chromium.org>
Reviewed-by: Khushal <khushalsagar@chromium.org>
Commit-Queue: Khushal <khushalsagar@chromium.org>
Cr-Commit-Position: refs/heads/master@{#742990}

components/viz/service/display/direct_renderer.cc

@@ -137,10 +137,6 @@ void DirectRenderer::Initialize() {
   if (context_provider) {
     if (context_provider->ContextCapabilities().commit_overlay_planes)
       allow_empty_swap_ = true;
-    if (context_provider->ContextCapabilities()
-            .disable_non_empty_post_sub_buffers) {
-      use_partial_swap_ = false;
-    }
 #if DCHECK_IS_ON()
     supports_occlusion_query_ =
         context_provider->ContextCapabilities().occlusion_query;

gpu/command_buffer/common/capabilities.h

@@ -183,9 +183,6 @@ struct GPU_EXPORT Capabilities {
   // details.
   bool chromium_image_rgb_emulation = false;
 
-  // When true, non-empty post sub buffer calls are unsupported.
-  bool disable_non_empty_post_sub_buffers = false;
-
   bool disable_2d_canvas_copy_on_write = false;
 
   bool texture_npot = false;

gpu/command_buffer/service/gles2_cmd_decoder.cc

@@ -4335,10 +4335,6 @@ Capabilities GLES2DecoderImpl::GetCapabilities() {
       group_->gpu_feature_info()
           .status_values[GPU_FEATURE_TYPE_GPU_RASTERIZATION] ==
       kGpuFeatureStatusEnabled;
-  if (workarounds().disable_non_empty_post_sub_buffers_for_onscreen_surfaces &&
-      !surface_->IsOffscreen()) {
-    caps.disable_non_empty_post_sub_buffers = true;
-  }
   if (workarounds().broken_egl_image_ref_counting &&
       group_->gpu_preferences().enable_threaded_texture_mailboxes) {
     caps.disable_2d_canvas_copy_on_write = true;

gpu/config/gpu_workaround_list.txt

@@ -33,7 +33,6 @@ disable_gl_rgb_format
 disable_half_float_for_gmb
 disable_larger_than_screen_overlays
 disable_multisampling_color_mask_usage
-disable_non_empty_post_sub_buffers_for_onscreen_surfaces
 disable_nv12_dxgi_video
 disable_nv12_dynamic_textures
 disable_overlay_ca_layers

gpu/ipc/common/gpu_command_buffer_traits_multi.h

@@ -141,7 +141,6 @@ IPC_STRUCT_TRAITS_BEGIN(gpu::Capabilities)
   IPC_STRUCT_TRAITS_MEMBER(protected_video_swap_chain)
   IPC_STRUCT_TRAITS_MEMBER(gpu_vsync)
   IPC_STRUCT_TRAITS_MEMBER(shared_image_swap_chain)
-  IPC_STRUCT_TRAITS_MEMBER(disable_non_empty_post_sub_buffers)
   IPC_STRUCT_TRAITS_MEMBER(avoid_stencil_buffers)
   IPC_STRUCT_TRAITS_MEMBER(disable_2d_canvas_copy_on_write)
   IPC_STRUCT_TRAITS_MEMBER(texture_npot)