RefCounted types should not have public destructors, media/ and gpu/ edition

gpu/command_buffer/service/framebuffer_manager.cc

Index: gpu/command_buffer/service/framebuffer_manager.cc
diff --git a/gpu/command_buffer/service/framebuffer_manager.cc b/gpu/command_buffer/service/framebuffer_manager.cc
index 4680a378566958dddd80aa3c564b52abec3fd377..7ed551b78c337aa36caf296a378e2ebf9c746c15 100644
--- a/gpu/command_buffer/service/framebuffer_manager.cc
+++ b/gpu/command_buffer/service/framebuffer_manager.cc
@@ -17,8 +17,6 @@ class RenderbufferAttachment
       : renderbuffer_(renderbuffer) {
   }
 
-  virtual ~RenderbufferAttachment() { }
-
   virtual GLsizei width() const {
     return renderbuffer_->width();
   }
@@ -73,6 +71,9 @@ class RenderbufferAttachment
     return renderbuffer_.get();
   }
 
+ protected:
+  virtual ~RenderbufferAttachment() { }
+
  private:
   RenderbufferManager::RenderbufferInfo::Ref renderbuffer_;
 
@@ -89,8 +90,6 @@ class TextureAttachment
         level_(level) {
   }
 
-  virtual ~TextureAttachment() { }
-
   virtual GLsizei width() const {
     GLsizei temp_width = 0;
     GLsizei temp_height = 0;
@@ -159,6 +158,9 @@ class TextureAttachment
     return (need & have) != 0;
   }
 
+ protected:
+  virtual ~TextureAttachment() { }
+
  private:
   TextureManager::TextureInfo::Ref texture_;
   GLenum target_;