surfaceflinger: move EGL version/extensions dump into RE

Test: SurfaceFlinger_test
Change-Id: I0c6e258e5ab2e55c7092d1642627c573038b99ac
diff --git a/services/surfaceflinger/RenderEngine/RenderEngine.cpp b/services/surfaceflinger/RenderEngine/RenderEngine.cpp
index ac646ac..1d22f84 100644
--- a/services/surfaceflinger/RenderEngine/RenderEngine.cpp
+++ b/services/surfaceflinger/RenderEngine/RenderEngine.cpp
@@ -271,6 +271,11 @@
 }
 
 void RenderEngine::dump(String8& result) {
+    result.appendFormat("EGL implementation : %s\n",
+            eglQueryStringImplementationANDROID(mEGLDisplay, EGL_VERSION));
+    result.appendFormat("%s\n",
+            eglQueryStringImplementationANDROID(mEGLDisplay, EGL_EXTENSIONS));
+
     const GLExtensions& extensions(GLExtensions::getInstance());
     result.appendFormat("GLES: %s, %s, %s\n",
             extensions.getVendor(),