Expanded distribution of instance counting

http://codereview.appspot.com/6300114/



git-svn-id: http://skia.googlecode.com/svn/trunk@4291 2bbb7eff-a529-9590-31e7-b0007b416f81
diff --git a/src/gpu/gl/GrGLInterface.cpp b/src/gpu/gl/GrGLInterface.cpp
index abd4366..02e9337 100644
--- a/src/gpu/gl/GrGLInterface.cpp
+++ b/src/gpu/gl/GrGLInterface.cpp
@@ -11,6 +11,8 @@
 
 #include <stdio.h>
 
+SK_DEFINE_INST_COUNT(GrGLInterface)
+
 #if GR_GL_PER_GL_FUNC_CALLBACK
 namespace {
 void GrGLDefaultInterfaceCallback(const GrGLInterface*) {}