Fix typo in "PixelShaderOuputVariable".

Change-Id: I2b223c9b80faa3ff2a0f94bd52ca73edf3d67cf7
Reviewed-on: https://chromium-review.googlesource.com/216273
Tested-by: Jamie Madill <jmadill@chromium.org>
Reviewed-by: Geoff Lang <geofflang@chromium.org>
diff --git a/src/libGLESv2/ProgramBinary.h b/src/libGLESv2/ProgramBinary.h
index 76baaec..b51b7b1 100644
--- a/src/libGLESv2/ProgramBinary.h
+++ b/src/libGLESv2/ProgramBinary.h
@@ -296,7 +296,7 @@
     std::string mPixelHLSL;
     rx::D3DWorkaroundType mPixelWorkarounds;
     bool mUsesFragDepth;
-    std::vector<rx::PixelShaderOuputVariable> mPixelShaderKey;
+    std::vector<rx::PixelShaderOutputVariable> mPixelShaderKey;
     std::vector<PixelExecutable *> mPixelExecutables;
 
     rx::ShaderExecutable *mGeometryExecutable;