Remove OS(QNX) support.

Source/core/html/canvas/WebGLRenderingContext.cpp

 /*
  * Copyright (C) 2009 Apple 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:
  * 1. Redistributions of source code must retain the above copyright
  *    notice, this list of conditions and the following disclaimer.
  * 2. Redistributions in binary form must reproduce the above copyright
  *    notice, this list of conditions and the following disclaimer in the
@@ skipping 3417 matching lines @@
     void* data = pixels->baseAddress();
 
     {
         ScopedDrawingBufferBinder binder(m_drawingBuffer.get(), m_framebufferBinding.get());
         if (m_isRobustnessEXTSupported)
             m_context->getExtensions()->readnPixelsEXT(x, y, width, height, format, type, pixels->byteLength(), data);
         else
             m_context->readPixels(x, y, width, height, format, type, data);
     }
 
-#if OS(DARWIN) || OS(QNX)
+#if OS(DARWIN)
     if (m_isRobustnessEXTSupported) // we haven't computed padding
         m_context->computeImageSizeInBytes(format, type, width, height, m_packAlignment, &totalBytesRequired, &padding);
-    // FIXME: remove this section when GL driver bug on Mac AND the GLES driver bug
-    // on QC & Imagination QNX is fixed, i.e., when alpha is off, readPixels should
-    // set alpha to 255 instead of 0.
+    // FIXME: remove this section when GL driver bug on Mac is fixed, i.e.,
+    // when alpha is off, readPixels should set alpha to 255 instead of 0.
     if (!m_framebufferBinding && !m_context->getContextAttributes().alpha) {
         unsigned char* pixels = reinterpret_cast<unsigned char*>(data);
         for (GC3Dsizei iy = 0; iy < height; ++iy) {
             for (GC3Dsizei ix = 0; ix < width; ++ix) {
                 pixels[3] = 255;
                 pixels += 4;
             }
             pixels += padding;
         }
     }
@@ skipping 2524 matching lines @@
 bool WebGLRenderingContext::supportsDrawBuffers()
 {
     if (!m_drawBuffersWebGLRequirementsChecked) {
         m_drawBuffersWebGLRequirementsChecked = true;
         m_drawBuffersSupported = EXTDrawBuffers::supported(this);
     }
     return m_drawBuffersSupported;
 }
 
 } // namespace WebCore