Delete usage and support for EGL_ANGLE_software_display extension.

ui/gl/gl_surface_mac.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.h"
 
 #include "base/debug/trace_event.h"
 #include "base/logging.h"
 #include "base/memory/scoped_ptr.h"
 #include "third_party/mesa/src/include/GL/osmesa.h"
@@ skipping 18 matching lines @@
         return false;
       }
       break;
     default:
       break;
   }
   return true;
 }
 
 scoped_refptr<GLSurface> GLSurface::CreateViewGLSurface(
-    bool software,
     gfx::AcceleratedWidget window) {
   TRACE_EVENT0("gpu", "GLSurface::CreateViewGLSurface");
 #if defined(USE_AURA)
-  if (software)
-    return NULL;
-
   switch (GetGLImplementation()) {
     case kGLImplementationDesktopGL:
     case kGLImplementationAppleGL: {
       scoped_refptr<GLSurface> surface(new GLSurfaceNSView(window));
       if (!surface->Initialize())
         return NULL;
 
       return surface;
     }
     case kGLImplementationMockGL:
       return new GLSurfaceStub;
     default:
       NOTREACHED();
       return NULL;
   }
 #else
-  return CreateOffscreenGLSurface(software, gfx::Size(1,1));
+  return CreateOffscreenGLSurface(gfx::Size(1, 1));
 #endif
 }
 
 scoped_refptr<GLSurface> GLSurface::CreateOffscreenGLSurface(
-    bool software,
     const gfx::Size& size) {
   TRACE_EVENT0("gpu", "GLSurface::CreateOffscreenGLSurface");
-  if (software)
-    return NULL;
-
   switch (GetGLImplementation()) {
     case kGLImplementationOSMesaGL: {
       scoped_refptr<GLSurface> surface(new GLSurfaceOSMesa(OSMESA_RGBA,
                                                            size));
       if (!surface->Initialize())
         return NULL;
 
       return surface;
     }
     case kGLImplementationDesktopGL:
     case kGLImplementationAppleGL: {
       scoped_refptr<GLSurface> surface(new NoOpGLSurfaceCGL(size));
       if (!surface->Initialize())
         return NULL;
 
       return surface;
     }
     case kGLImplementationMockGL:
       return new GLSurfaceStub;
     default:
       NOTREACHED();
       return NULL;
   }
 }
 
 }  // namespace gfx