Revert "Skia: Enable ExplicitlyAllocateGPUResources & SortRenderTargets."

This reverts commit 0cb76248.

Reason for revert: performance regressions

Original change's description:
> Skia: Enable ExplicitlyAllocateGPUResources & SortRenderTargets.
>
> Enable those two options which may improve skia performance.
>
> Bug: 894492
>
> Cq-Include-Trybots: luci.chromium.try:android_optional_gpu_tests_rel;luci.chromium.try:linux_optional_gpu_tests_rel;luci.chromium.try:mac_optional_gpu_tests_rel;luci.chromium.try:win_optional_gpu_tests_rel
> Change-Id: I80a1b9d1ce018d90ab91e5e676b6d09a7dc23d8d
> Reviewed-on: https://chromium-review.googlesource.com/c/1273267
> Commit-Queue: Peng Huang <penghuang@chromium.org>
> Reviewed-by: Antoine Labour <piman@chromium.org>
> Reviewed-by: Robert Phillips <robertphillips@google.com>
> Cr-Commit-Position: refs/heads/master@{#599321}

TBR=penghuang@chromium.org,robertphillips@google.com,piman@chromium.org

# Not skipping CQ checks because original CL landed > 1 day ago.

Bug: 894492,895408,895384,895377,895369,895280
Change-Id: I657077091716a618d18a3d1109531e6b3819108c
Cq-Include-Trybots: luci.chromium.try:android_optional_gpu_tests_rel;luci.chromium.try:linux_optional_gpu_tests_rel;luci.chromium.try:mac_optional_gpu_tests_rel;luci.chromium.try:win_optional_gpu_tests_rel
Reviewed-on: https://chromium-review.googlesource.com/c/1281055
Commit-Queue: Peng Huang <penghuang@chromium.org>
Reviewed-by: Peng Huang <penghuang@chromium.org>
Cr-Commit-Position: refs/heads/master@{#599741}

components/viz/service/gl/gpu_service_impl.cc

@@ -343,7 +343,6 @@ bool GpuServiceImpl::GetGrContextForGLSurface(gl::GLSurface* surface,
 
     GrContextOptions options;
     options.fExplicitlyAllocateGPUResources = GrContextOptions::Enable::kYes;
-    options.fSortRenderTargets = GrContextOptions::Enable::kYes;
     options.fUseGLBufferDataNullHint = GrContextOptions::Enable::kYes;
     data.gr_context = GrContext::MakeGL(std::move(native_interface), options);
     DCHECK(data.gr_context);

gpu/skia_bindings/grcontext_for_gles2_interface.cc

@@ -38,8 +38,6 @@ GrContextForGLES2Interface::GrContextForGLES2Interface(
   options.fAvoidStencilBuffers = capabilities.avoid_stencil_buffers;
   options.fAllowPathMaskCaching = false;
   options.fSharpenMipmappedTextures = true;
-  options.fExplicitlyAllocateGPUResources = GrContextOptions::Enable::kYes;
-  options.fSortRenderTargets = GrContextOptions::Enable::kYes;
   sk_sp<GrGLInterface> interface(
       skia_bindings::CreateGLES2InterfaceBindings(gl, context_support));
   gr_context_ = GrContext::MakeGL(std::move(interface), options);