Make GrDrawTarget::Caps ref counted and GrGLCaps derive from it.

src/gpu/gl/GrGLCaps.h

Index: src/gpu/gl/GrGLCaps.h
===================================================================
--- src/gpu/gl/GrGLCaps.h	(revision 8359)
+++ src/gpu/gl/GrGLCaps.h	(working copy)
@@ -12,6 +12,7 @@
 #include "SkTArray.h"
 #include "SkTDArray.h"
 #include "GrGLStencilBuffer.h"
+#include "GrDrawTarget.h"
 
 class GrGLContextInfo;
 
@@ -20,7 +21,7 @@
  * version and the extensions string. It also tracks formats that have passed
  * the FBO completeness test.
  */
-class GrGLCaps {
+class GrGLCaps : public GrDrawTarget::Caps {
 public:
     typedef GrGLStencilBuffer::Format StencilFormat;
 
@@ -93,7 +94,7 @@
     /**
      * Resets the caps such that nothing is supported.
      */
-    void reset();
+    virtual void reset() SK_OVERRIDE;
 
     /**
      * Initializes the GrGLCaps to the set of features supported in the current
@@ -158,7 +159,7 @@
     /**
      * Prints the caps info using GrPrintf.
      */
-    void print() const;
+    virtual void print() const SK_OVERRIDE;
 
     /**
      * Gets an array of legal stencil formats. These formats are not guaranteed
@@ -308,6 +309,8 @@
     bool fVertexArrayObjectSupport : 1;
     bool fUseNonVBOVertexAndIndexDynamicData : 1;
     bool fIsCoreProfile : 1;
+
+    typedef GrDrawTarget::Caps INHERITED;
 };
 
 #endif