Add onMemoryDump to GrContext

src/gpu/gl/GrGLRenderTarget.h

Index: src/gpu/gl/GrGLRenderTarget.h
diff --git a/src/gpu/gl/GrGLRenderTarget.h b/src/gpu/gl/GrGLRenderTarget.h
index 1e6dc7f767edd9a738415f7b9b2d69da50e67263..2fdf91dfa3d7df9da36f465d1fa958beef5ac736 100644
--- a/src/gpu/gl/GrGLRenderTarget.h
+++ b/src/gpu/gl/GrGLRenderTarget.h
@@ -62,6 +62,10 @@ public:
         return kCached_LifeCycle == fRTLifecycle || kUncached_LifeCycle == fRTLifecycle;
     }
 
+    // GrGLRenderTarget overrides dumpMemoryStatistics so it can log its texture and renderbuffer
+    // components seperately.
+    void dumpMemoryStatistics(SkTraceMemoryDump* traceMemoryDump) const override;
+
 protected:
     // The public constructor registers this object with the cache. However, only the most derived
     // class should register with the cache. This constructor does not do the registration and