Revert of command_buffer: Implement EXT_multisample_compatibility (patchset #9 id:160001 of https://codereview.chromium.org/1231673006/ )

Reason for revert:
Breaking the EXTMultisampleCompatibilityTest.DrawAndResolve test on AMD.

EXTMultisampleCompatibilityTest.DrawAndResolve:
../../gpu/command_buffer/tests/gl_ext_multisample_compatibility_unittest.cc:208: Failure
Value of: r
Actual: '\x80' (128)
Expected: 255u
Which is: 255
../../gpu/command_buffer/tests/gl_ext_multisample_compatibility_unittest.cc:209: Failure
Value of: g
Actual: '\x80' (128)
Expected: 0u
Which is: 0
../../gpu/command_buffer/tests/gl_ext_multisample_compatibility_unittest.cc:225: Failure
Value of: r
Actual: '\x80' (128)
Expected: 255u
Which is: 255
../../gpu/command_buffer/tests/gl_ext_multisample_compatibility_unittest.cc:227: Failure
Value of: b
Actual: '\x80' (128)
Expected: 0u
Which is: 0

Original issue's description:
> command_buffer: Implement EXT_multisample_compatibility
>
> Implement EXT_multisample_compatibility OpenGL ES extension in command
> buffer.
>
> Skia needs this in order to enable and disable multisampling when
> using GL path rendering.
>
> BUG=506765
>
> Committed: https://crrev.com/e3237bbb682e52f92d5bd18dcab672677e4e3bc4
> Cr-Commit-Position: refs/heads/master@{#346847}
>
> Committed: https://crrev.com/28e57fb8caf8c0daf4be0692777aa9229cfdaa8b
> Cr-Commit-Position: refs/heads/master@{#347390}

TBR=vmiura@chromium.org,piman@chromium.org,zmo@google.com,markkilgard@gmail.com,zmo@chromium.org,sievers@google.com,kkinnunen@nvidia.com
NOPRESUBMIT=true
NOTREECHECKS=true
NOTRY=true
BUG=506765, 529315

Review URL: https://codereview.chromium.org/1333493004

Cr-Commit-Position: refs/heads/master@{#347705}

1 files changed, 1 insertions, 53 deletions

diff --git a/gpu/command_buffer/service/context_state_impl_autogen.h b/gpu/command_buffer/service/context_state_impl_autogen.h
index ce9f70f..450f0e2 100644
--- a/gpu/command_buffer/service/context_state_impl_autogen.h
+++ b/gpu/command_buffer/service/context_state_impl_autogen.h
@@ -34,11 +34,7 @@ ContextState::EnableFlags::EnableFlags()
       rasterizer_discard(false),
       cached_rasterizer_discard(false),
       primitive_restart_fixed_index(false),
-      cached_primitive_restart_fixed_index(false),
-      multisample_ext(true),
-      cached_multisample_ext(true),
-      sample_alpha_to_one_ext(false),
-      cached_sample_alpha_to_one_ext(false) {}
+      cached_primitive_restart_fixed_index(false) {}
 
 void ContextState::Initialize() {
   blend_color_red = 0.0f;
@@ -180,19 +176,6 @@ void ContextState::InitCapabilities(const ContextState* prev_state) const {
         enable_flags.cached_stencil_test) {
       EnableDisable(GL_STENCIL_TEST, enable_flags.cached_stencil_test);
     }
-    if (feature_info_->feature_flags().ext_multisample_compatibility) {
-      if (prev_state->enable_flags.cached_multisample_ext !=
-          enable_flags.cached_multisample_ext) {
-        EnableDisable(GL_MULTISAMPLE_EXT, enable_flags.cached_multisample_ext);
-      }
-    }
-    if (feature_info_->feature_flags().ext_multisample_compatibility) {
-      if (prev_state->enable_flags.cached_sample_alpha_to_one_ext !=
-          enable_flags.cached_sample_alpha_to_one_ext) {
-        EnableDisable(GL_SAMPLE_ALPHA_TO_ONE_EXT,
-                      enable_flags.cached_sample_alpha_to_one_ext);
-      }
-    }
     if (feature_info_->IsES3Capable()) {
       if (prev_state->enable_flags.cached_rasterizer_discard !=
           enable_flags.cached_rasterizer_discard) {
@@ -217,13 +200,6 @@ void ContextState::InitCapabilities(const ContextState* prev_state) const {
     EnableDisable(GL_SAMPLE_COVERAGE, enable_flags.cached_sample_coverage);
     EnableDisable(GL_SCISSOR_TEST, enable_flags.cached_scissor_test);
     EnableDisable(GL_STENCIL_TEST, enable_flags.cached_stencil_test);
-    if (feature_info_->feature_flags().ext_multisample_compatibility) {
-      EnableDisable(GL_MULTISAMPLE_EXT, enable_flags.cached_multisample_ext);
-    }
-    if (feature_info_->feature_flags().ext_multisample_compatibility) {
-      EnableDisable(GL_SAMPLE_ALPHA_TO_ONE_EXT,
-                    enable_flags.cached_sample_alpha_to_one_ext);
-    }
     if (feature_info_->IsES3Capable()) {
       EnableDisable(GL_RASTERIZER_DISCARD,
                     enable_flags.cached_rasterizer_discard);
@@ -432,10 +408,6 @@ bool ContextState::GetEnabled(GLenum cap) const {
       return enable_flags.rasterizer_discard;
     case GL_PRIMITIVE_RESTART_FIXED_INDEX:
       return enable_flags.primitive_restart_fixed_index;
-    case GL_MULTISAMPLE_EXT:
-      return enable_flags.multisample_ext;
-    case GL_SAMPLE_ALPHA_TO_ONE_EXT:
-      return enable_flags.sample_alpha_to_one_ext;
     default:
       NOTREACHED();
       return false;
@@ -809,18 +781,6 @@ bool ContextState::GetStateAsGLint(GLenum pname,
             static_cast<GLint>(enable_flags.primitive_restart_fixed_index);
       }
       return true;
-    case GL_MULTISAMPLE_EXT:
-      *num_written = 1;
-      if (params) {
-        params[0] = static_cast<GLint>(enable_flags.multisample_ext);
-      }
-      return true;
-    case GL_SAMPLE_ALPHA_TO_ONE_EXT:
-      *num_written = 1;
-      if (params) {
-        params[0] = static_cast<GLint>(enable_flags.sample_alpha_to_one_ext);
-      }
-      return true;
     default:
       return false;
   }
@@ -1189,18 +1149,6 @@ bool ContextState::GetStateAsGLfloat(GLenum pname,
             static_cast<GLfloat>(enable_flags.primitive_restart_fixed_index);
       }
       return true;
-    case GL_MULTISAMPLE_EXT:
-      *num_written = 1;
-      if (params) {
-        params[0] = static_cast<GLfloat>(enable_flags.multisample_ext);
-      }
-      return true;
-    case GL_SAMPLE_ALPHA_TO_ONE_EXT:
-      *num_written = 1;
-      if (params) {
-        params[0] = static_cast<GLfloat>(enable_flags.sample_alpha_to_one_ext);
-      }
-      return true;
     default:
       return false;
   }