Remove GLContext::Destroy

ui/gl/gl_api_unittest.cc

 // Copyright 2015 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #include "base/command_line.h"
 #include "base/memory/scoped_ptr.h"
 #include "testing/gtest/include/gtest/gtest.h"
 #include "ui/gl/gl_context.h"
 #include "ui/gl/gl_gl_api_implementation.h"
 #include "ui/gl/gl_implementation.h"
 #include "ui/gl/gl_switches.h"
 #include "ui/gl/gpu_timing.h"
 
 namespace gfx {
 
 class GLContextFake : public GLContext {
  public:
   bool Initialize(GLSurface* compatible_surface,
                   GpuPreference gpu_preference) override {
     return true;
   }
-  void Destroy() override {}
   bool MakeCurrent(GLSurface* surface) override { return true; }
   void ReleaseCurrent(GLSurface* surface) override {}
   bool IsCurrent(GLSurface* surface) override { return true; }
   void* GetHandle() override { return NULL; }
   scoped_refptr<gfx::GPUTimingClient> CreateGPUTimingClient() override {
     return NULL;
   }
   void OnSetSwapInterval(int interval) override {}
   GLContextFake() : GLContext(NULL) {}
  protected:
@@ skipping 166 matching lines @@
                                  kFakeDisabledExtensions);
   InitializeAPI(&command_line);
 
   EXPECT_EQ(arraysize(kFilteredExtensions), GetNumExtensions());
   for (uint32_t i = 0; i < arraysize(kFilteredExtensions); ++i) {
     EXPECT_STREQ(kFilteredExtensions[i], GetExtensioni(i));
   }
 }
 
 }  // namespace gfx