Remove OS(QNX) support.

Source/core/html/canvas/WebGLRenderingContext.cpp

Index: Source/core/html/canvas/WebGLRenderingContext.cpp
diff --git a/Source/core/html/canvas/WebGLRenderingContext.cpp b/Source/core/html/canvas/WebGLRenderingContext.cpp
index 70fab87b12bc70cefa7f31e3d7e51e538c7d410f..737949f074e2d190de3f4b48bd3689f8a54bd0cd 100644
--- a/Source/core/html/canvas/WebGLRenderingContext.cpp
+++ b/Source/core/html/canvas/WebGLRenderingContext.cpp
@@ -3435,12 +3435,11 @@ void WebGLRenderingContext::readPixels(GC3Dint x, GC3Dint y, GC3Dsizei width, GC
             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) {