Catch more shaders in cache warming

Bug: b/178661709

Test: Confirm with perfetto no unwanted shader compiles during
certain render engine actions

Change-Id: Ib5a523bcdcf8eded74f7ec4ecca526bdceff5039
diff --git a/libs/renderengine/skia/SkiaGLRenderEngine.h b/libs/renderengine/skia/SkiaGLRenderEngine.h
index 25557f1..8e77c16 100644
--- a/libs/renderengine/skia/SkiaGLRenderEngine.h
+++ b/libs/renderengine/skia/SkiaGLRenderEngine.h
@@ -66,6 +66,7 @@
     bool supportsBackgroundBlur() override { return mBlurFilter != nullptr; }
     void assertShadersCompiled(int numShaders) override;
     void onPrimaryDisplaySizeChanged(ui::Size size) override;
+    int reportShadersCompiled() override;
 
 protected:
     void dump(std::string& result) override;