Move GrGLExtensions from GrGLContextInfo to GrGLInterface

include/gpu/gl/SkGLContextHelper.h

Index: include/gpu/gl/SkGLContextHelper.h
diff --git a/include/gpu/gl/SkGLContextHelper.h b/include/gpu/gl/SkGLContextHelper.h
index 44eb509a044262414b83cbb6379ad71f8b8d4a4c..5ee88e034776129f65a8493290cd6204f6f9e7a6 100644
--- a/include/gpu/gl/SkGLContextHelper.h
+++ b/include/gpu/gl/SkGLContextHelper.h
@@ -8,7 +8,6 @@
 #ifndef SkGLContextHelper_DEFINED
 #define SkGLContextHelper_DEFINED
 
-#include "GrGLExtensions.h"
 #include "GrGLInterface.h"
 
 /**
@@ -48,7 +47,7 @@ public:
 
     bool hasExtension(const char* extensionName) const {
         SkASSERT(NULL != fGL);
-        return fExtensions.has(extensionName);
+        return fGL->hasExtension(extensionName);
     }
 
 protected:
@@ -66,7 +65,6 @@ protected:
     virtual void destroyGLContext() = 0;
 
 private:
-    GrGLExtensions fExtensions;
     GrGLuint fFBO;
     GrGLuint fColorBufferID;
     GrGLuint fDepthStencilBufferID;