Routine to upload hardware bitmaps

Change-Id: Id8283a0975325e6830d55fd1e33c5f292a1e9be0
Test: refactoring cl.
bug:30999911
diff --git a/libs/hwui/renderthread/EglManager.h b/libs/hwui/renderthread/EglManager.h
index ba4a3e1..7349dcc 100644
--- a/libs/hwui/renderthread/EglManager.h
+++ b/libs/hwui/renderthread/EglManager.h
@@ -55,6 +55,7 @@
 // and EGLConfig, which are re-used by CanvasContext
 class EglManager {
 public:
+    static const char* eglErrorString();
     // Returns true on success, false on failure
     void initialize();
 
@@ -83,7 +84,6 @@
 
 private:
     friend class RenderThread;
-
     explicit EglManager(RenderThread& thread);
     // EglContext is never destroyed, method is purposely not implemented
     ~EglManager();