Cleaning up trailing spaces and typos.

BUG=skia:
GOLD_TRYBOT_URL= https://gold.skia.org/search2?unt=true&query=source_type%3Dgm&master=false&issue=1631993002

Review URL: https://codereview.chromium.org/1631993002
diff --git a/src/gpu/GrTexturePriv.h b/src/gpu/GrTexturePriv.h
index 8add4e1..da0558e 100644
--- a/src/gpu/GrTexturePriv.h
+++ b/src/gpu/GrTexturePriv.h
@@ -62,7 +62,7 @@
     GrTexturePriv* operator&();
 
     GrTexture* fTexture;
-        
+
     friend class GrTexture; // to construct/copy this type.
 };