rename GrDrawTargetCaps to GrCaps

Review URL: https://codereview.chromium.org/1133123009
diff --git a/src/gpu/gl/GrGLCaps.h b/src/gpu/gl/GrGLCaps.h
index 25c7889..663cd4b 100644
--- a/src/gpu/gl/GrGLCaps.h
+++ b/src/gpu/gl/GrGLCaps.h
@@ -23,7 +23,7 @@
  * version and the extensions string. It also tracks formats that have passed
  * the FBO completeness test.
  */
-class GrGLCaps : public GrDrawTargetCaps {
+class GrGLCaps : public GrCaps {
 public:
     SK_DECLARE_INST_COUNT(GrGLCaps)
 
@@ -371,7 +371,7 @@
     };
     mutable SkTHashMap<ReadPixelsSupportedFormat, bool> fReadPixelsSupportedCache;
 
-    typedef GrDrawTargetCaps INHERITED;
+    typedef GrCaps INHERITED;
 };