Rename a gpu workaround.

third_party/WebKit/Source/platform/graphics/gpu/DrawingBuffer.cpp

 /*
  * Copyright (c) 2010, Google Inc. All rights reserved.
  *
  * Redistribution and use in source and binary forms, with or without
  * modification, are permitted provided that the following conditions are
  * met:
  *
  *     * Redistributions of source code must retain the above copyright
  * notice, this list of conditions and the following disclaimer.
  *     * Redistributions in binary form must reproduce the above
@@ skipping 781 matching lines @@
         int height = m_size.height();
         // Use NEAREST, because there is no scale performed during the blit.
         GLuint filter = GL_NEAREST;
 
         m_gl->BlitFramebufferCHROMIUM(0, 0, width, height, 0, 0, width, height, GL_COLOR_BUFFER_BIT, filter);
 
         // On old AMD GPUs on OS X, glColorMask doesn't work correctly for
         // multisampled renderbuffers and the alpha channel can be overwritten.
         // Clear the alpha channel of |m_fbo|.
         if (defaultBufferRequiresAlphaChannelToBePreserved()
-            && contextProvider()->getCapabilities().disable_webgl_multisampling_color_mask_usage) {
+            && contextProvider()->getCapabilities().disable_multisampling_color_mask_usage) {
             m_gl->ClearColor(0, 0, 0, 1);
             m_gl->ColorMask(false, false, false, true);
             m_gl->Clear(GL_COLOR_BUFFER_BIT);
 
             m_gl->ClearColor(m_clearColor[0], m_clearColor[1], m_clearColor[2], m_clearColor[3]);
             m_gl->ColorMask(m_colorMask[0], m_colorMask[1], m_colorMask[2], m_colorMask[3]);
         }
 
         if (m_scissorEnabled)
             m_gl->Enable(GL_SCISSOR_TEST);
@@ skipping 275 matching lines @@
 
 void DrawingBuffer::restoreTextureBindings()
 {
     // This class potentially modifies the bindings for GL_TEXTURE_2D and
     // GL_TEXTURE_RECTANGLE. Only GL_TEXTURE_2D needs to be restored since
     // the public interface for WebGL does not support GL_TEXTURE_RECTANGLE.
     m_gl->BindTexture(GL_TEXTURE_2D, m_texture2DBinding);
 }
 
 } // namespace blink