Revert of Add command buffer support for EXT_sRGB_write_control

gpu/command_buffer/service/context_state_impl_autogen.h

Index: gpu/command_buffer/service/context_state_impl_autogen.h
diff --git a/gpu/command_buffer/service/context_state_impl_autogen.h b/gpu/command_buffer/service/context_state_impl_autogen.h
index 3569bbfb89efad347609c0c8ee6c2eac9a57538d..6bc4a82eaf211b9b3b168e3fe72d05eddc38db2a 100644
--- a/gpu/command_buffer/service/context_state_impl_autogen.h
+++ b/gpu/command_buffer/service/context_state_impl_autogen.h
@@ -21,8 +21,6 @@
       cached_depth_test(false),
       dither(true),
       cached_dither(true),
-      framebuffer_srgb_ext(true),
-      cached_framebuffer_srgb_ext(true),
       polygon_offset_fill(false),
       cached_polygon_offset_fill(false),
       sample_alpha_to_coverage(false),
@@ -169,13 +167,6 @@
     if (prev_state->enable_flags.cached_dither != enable_flags.cached_dither) {
       EnableDisable(GL_DITHER, enable_flags.cached_dither);
     }
-    if (feature_info_->feature_flags().ext_srgb_write_control) {
-      if (prev_state->enable_flags.cached_framebuffer_srgb_ext !=
-          enable_flags.cached_framebuffer_srgb_ext) {
-        EnableDisable(GL_FRAMEBUFFER_SRGB_EXT,
-                      enable_flags.cached_framebuffer_srgb_ext);
-      }
-    }
     if (prev_state->enable_flags.cached_polygon_offset_fill !=
         enable_flags.cached_polygon_offset_fill) {
       EnableDisable(GL_POLYGON_OFFSET_FILL,
@@ -228,10 +219,6 @@
     EnableDisable(GL_CULL_FACE, enable_flags.cached_cull_face);
     EnableDisable(GL_DEPTH_TEST, enable_flags.cached_depth_test);
     EnableDisable(GL_DITHER, enable_flags.cached_dither);
-    if (feature_info_->feature_flags().ext_srgb_write_control) {
-      EnableDisable(GL_FRAMEBUFFER_SRGB_EXT,
-                    enable_flags.cached_framebuffer_srgb_ext);
-    }
     EnableDisable(GL_POLYGON_OFFSET_FILL,
                   enable_flags.cached_polygon_offset_fill);
     EnableDisable(GL_SAMPLE_ALPHA_TO_COVERAGE,
@@ -446,8 +433,6 @@
       return enable_flags.depth_test;
     case GL_DITHER:
       return enable_flags.dither;
-    case GL_FRAMEBUFFER_SRGB_EXT:
-      return enable_flags.framebuffer_srgb_ext;
     case GL_POLYGON_OFFSET_FILL:
       return enable_flags.polygon_offset_fill;
     case GL_SAMPLE_ALPHA_TO_COVERAGE:
@@ -850,12 +835,6 @@
         params[0] = static_cast<GLint>(enable_flags.dither);
       }
       return true;
-    case GL_FRAMEBUFFER_SRGB_EXT:
-      *num_written = 1;
-      if (params) {
-        params[0] = static_cast<GLint>(enable_flags.framebuffer_srgb_ext);
-      }
-      return true;
     case GL_POLYGON_OFFSET_FILL:
       *num_written = 1;
       if (params) {
@@ -1290,12 +1269,6 @@
         params[0] = static_cast<GLfloat>(enable_flags.dither);
       }
       return true;
-    case GL_FRAMEBUFFER_SRGB_EXT:
-      *num_written = 1;
-      if (params) {
-        params[0] = static_cast<GLfloat>(enable_flags.framebuffer_srgb_ext);
-      }
-      return true;
     case GL_POLYGON_OFFSET_FILL:
       *num_written = 1;
       if (params) {