Remove GLImage::Destroy().

gpu/command_buffer/service/texture_definition.cc

Index: gpu/command_buffer/service/texture_definition.cc
diff --git a/gpu/command_buffer/service/texture_definition.cc b/gpu/command_buffer/service/texture_definition.cc
index fcb2633c544f365b15c6533fb5e8709ae4fd82c5..e656b7e0fd8359da739068ac15c2566e6ca6ccad 100644
--- a/gpu/command_buffer/service/texture_definition.cc
+++ b/gpu/command_buffer/service/texture_definition.cc
@@ -35,7 +35,6 @@ class GLImageSync : public gl::GLImage {
                        const gfx::Size& size);
 
   // Implement GLImage.
-  void Destroy(bool have_context) override;
   gfx::Size GetSize() override;
   unsigned GetInternalFormat() override;
   bool BindTexImage(unsigned target) override;
@@ -76,9 +75,6 @@ GLImageSync::~GLImageSync() {
     buffer_->RemoveClient(this);
 }
 
-void GLImageSync::Destroy(bool have_context) {
-}
-
 gfx::Size GLImageSync::GetSize() {
   return size_;
 }