Revert of GLContextGLX: try all GL versions from the highest.

ui/gl/gl_surface_glx.cc

 // Copyright (c) 2012 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #include "ui/gl/gl_surface_glx.h"
 
 extern "C" {
 #include <X11/Xlib.h>
 }
 #include <memory>
@@ skipping 19 matching lines @@
 #include "ui/gl/gl_implementation.h"
 #include "ui/gl/sync_control_vsync_provider.h"
 
 namespace gfx {
 
 namespace {
 
 Display* g_display = nullptr;
 bool g_glx_context_create = false;
 bool g_glx_create_context_robustness_supported = false;
-bool g_glx_create_context_profile_supported = false;
-bool g_glx_create_context_profile_es2_supported = false;
 bool g_glx_texture_from_pixmap_supported = false;
 bool g_glx_oml_sync_control_supported = false;
 
 // Track support of glXGetMscRateOML separately from GLX_OML_sync_control as a
 // whole since on some platforms (e.g. crosbug.com/34585), glXGetMscRateOML
 // always fails even though GLX_OML_sync_control is reported as being supported.
 bool g_glx_get_msc_rate_oml_supported = false;
 
 bool g_glx_sgi_video_sync_supported = false;
 
@@ skipping 334 matching lines @@
 
   if (major == 1 && minor < 3) {
     LOG(ERROR) << "GLX 1.3 or later is required.";
     return false;
   }
 
   g_glx_context_create =
       HasGLXExtension("GLX_ARB_create_context");
   g_glx_create_context_robustness_supported =
       HasGLXExtension("GLX_ARB_create_context_robustness");
-  g_glx_create_context_profile_supported =
-      HasGLXExtension("GLX_ARB_create_context_profile");
-  g_glx_create_context_profile_es2_supported =
-      HasGLXExtension("GLX_ARB_create_context_es2_profile");
   g_glx_texture_from_pixmap_supported =
       HasGLXExtension("GLX_EXT_texture_from_pixmap");
   g_glx_oml_sync_control_supported =
       HasGLXExtension("GLX_OML_sync_control");
   g_glx_get_msc_rate_oml_supported = g_glx_oml_sync_control_supported;
   g_glx_sgi_video_sync_supported =
       HasGLXExtension("GLX_SGI_video_sync");
 
   if (!g_glx_get_msc_rate_oml_supported && g_glx_sgi_video_sync_supported)
     SGIVideoSyncProviderThreadShim::display_ = gfx::OpenNewXDisplay();
@@ skipping 16 matching lines @@
 bool GLSurfaceGLX::IsCreateContextSupported() {
   return g_glx_context_create;
 }
 
 // static
 bool GLSurfaceGLX::IsCreateContextRobustnessSupported() {
   return g_glx_create_context_robustness_supported;
 }
 
 // static
-bool GLSurfaceGLX::IsCreateContextProfileSupported() {
-  return g_glx_create_context_profile_supported;
-}
-
-// static
-bool GLSurfaceGLX::IsCreateContextES2ProfileSupported() {
-  return g_glx_create_context_profile_es2_supported;
-}
-
-// static
 bool GLSurfaceGLX::IsTextureFromPixmapSupported() {
   return g_glx_texture_from_pixmap_supported;
 }
 
 // static
 bool GLSurfaceGLX::IsOMLSyncControlSupported() {
   return g_glx_oml_sync_control_supported;
 }
 
 void* GLSurfaceGLX::GetDisplay() {
@@ skipping 199 matching lines @@
   if (!config_)
     config_ = GetConfigForWindow(g_display, window_);
   return config_;
 }
 
 UnmappedNativeViewGLSurfaceGLX::~UnmappedNativeViewGLSurfaceGLX() {
   Destroy();
 }
 
 }  // namespace gfx