Add trace point for creating backend texture

Bug: 177191401
Test: builds
Change-Id: I5ecc7803b385e4a2b94d8b82c396bda17d16802f
diff --git a/libs/renderengine/skia/AutoBackendTexture.cpp b/libs/renderengine/skia/AutoBackendTexture.cpp
index d126c27..2ffb547 100644
--- a/libs/renderengine/skia/AutoBackendTexture.cpp
+++ b/libs/renderengine/skia/AutoBackendTexture.cpp
@@ -72,6 +72,7 @@
 
 AutoBackendTexture::AutoBackendTexture(GrDirectContext* context, AHardwareBuffer* buffer,
                                        bool isRender) {
+    ATRACE_CALL();
     AHardwareBuffer_Desc desc;
     AHardwareBuffer_describe(buffer, &desc);
     bool createProtectedImage = 0 != (desc.usage & AHARDWAREBUFFER_USAGE_PROTECTED_CONTENT);