Add new runtime debug flags.

Change-Id: I07955de166a89b5053c6c13f250bb3e2936ca86e
diff --git a/libs/hwui/TextureCache.h b/libs/hwui/TextureCache.h
index 2ee88b1..27693df 100644
--- a/libs/hwui/TextureCache.h
+++ b/libs/hwui/TextureCache.h
@@ -107,6 +107,8 @@
     uint32_t mMaxSize;
     GLint mMaxTextureSize;
 
+    bool mDebugEnabled;
+
     /**
      * Used to access mCache and mSize. All methods are accessed from a single
      * thread except for remove().