Standardize the surface origin for each HWUI pipeline.

OpenGL prefers a bottom-left origin while Vulkan prefers the
top-left. Prior to this change we were inconsistent in Vulkan by
creating layers with a bottom-left origin which was different from
the primary buffer.

Test: CtsUiRenderingTestCases
Change-Id: Icfeed4085021cae941aeab58720406e3b3e37923
diff --git a/libs/hwui/pipeline/skia/SkiaOpenGLPipeline.h b/libs/hwui/pipeline/skia/SkiaOpenGLPipeline.h
index 47991069..6692922 100644
--- a/libs/hwui/pipeline/skia/SkiaOpenGLPipeline.h
+++ b/libs/hwui/pipeline/skia/SkiaOpenGLPipeline.h
@@ -39,6 +39,7 @@
               const Rect& contentDrawBounds, bool opaque, const LightInfo& lightInfo,
               const std::vector<sp<RenderNode> >& renderNodes,
               FrameInfoVisualizer* profiler) override;
+    GrSurfaceOrigin getSurfaceOrigin() override { return kBottomLeft_GrSurfaceOrigin; }
     bool swapBuffers(const renderthread::Frame& frame, bool drew, const SkRect& screenDirty,
                      FrameInfo* currentFrameInfo, bool* requireSwap) override;
     DeferredLayerUpdater* createTextureLayer() override;