Remove remaining traces of CreateGpuMemoryBufferImageCHROMIUM

gpu/gles2_conform_support/egl/context.h

Index: gpu/gles2_conform_support/egl/context.h
diff --git a/gpu/gles2_conform_support/egl/context.h b/gpu/gles2_conform_support/egl/context.h
index 7d45ea70515a63666ca0d2e154c9ea8dafc458ca..cff597663d59bf141c17f81a2ca7d55b083f9642 100644
--- a/gpu/gles2_conform_support/egl/context.h
+++ b/gpu/gles2_conform_support/egl/context.h
@@ -63,10 +63,6 @@ class Context : public base::RefCountedThreadSafe<Context>,
                       size_t height,
                       unsigned internalformat) override;
   void DestroyImage(int32_t id) override;
-  int32_t CreateGpuMemoryBufferImage(size_t width,
-                                     size_t height,
-                                     unsigned internalformat,
-                                     unsigned usage) override;
   void SignalQuery(uint32_t query, const base::Closure& callback) override;
   void SetLock(base::Lock*) override;
   void EnsureWorkVisible() override;