Fix flaky LayerTreeHostCopyRequestTestDeleteTexture test.

cc/test/test_web_graphics_context_3d.h

 // Copyright 2013 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.
 
 #ifndef CC_TEST_TEST_WEB_GRAPHICS_CONTEXT_3D_H_
 #define CC_TEST_TEST_WEB_GRAPHICS_CONTEXT_3D_H_
 
 #include <stddef.h>
 #include <stdint.h>
 
@@ skipping 112 matching lines @@
 
   virtual void useProgram(GLuint program);
 
   virtual void viewport(GLint x, GLint y, GLsizei width, GLsizei height) {}
 
   virtual void genBuffers(GLsizei count, GLuint* ids);
   virtual void genFramebuffers(GLsizei count, GLuint* ids);
   virtual void genRenderbuffers(GLsizei count, GLuint* ids);
   virtual void genTextures(GLsizei count, GLuint* ids);
 
-  virtual void deleteBuffers(GLsizei count, GLuint* ids);
-  virtual void deleteFramebuffers(GLsizei count, GLuint* ids);
-  virtual void deleteRenderbuffers(GLsizei count, GLuint* ids);
-  virtual void deleteTextures(GLsizei count, GLuint* ids);
+  virtual void deleteBuffers(GLsizei count, const GLuint* ids);
+  virtual void deleteFramebuffers(GLsizei count, const GLuint* ids);
+  virtual void deleteRenderbuffers(GLsizei count, const GLuint* ids);
+  virtual void deleteTextures(GLsizei count, const GLuint* ids);
 
   virtual GLuint createBuffer();
   virtual GLuint createFramebuffer();
   virtual GLuint createRenderbuffer();
   virtual GLuint createTexture();
 
   virtual void deleteBuffer(GLuint id);
   virtual void deleteFramebuffer(GLuint id);
   virtual void deleteRenderbuffer(GLuint id);
   virtual void deleteTexture(GLuint id);
@@ skipping 336 matching lines @@
 
   scoped_refptr<Namespace> namespace_;
   static Namespace* shared_namespace_;
 
   base::WeakPtrFactory<TestWebGraphicsContext3D> weak_ptr_factory_;
 };
 
 }  // namespace cc
 
 #endif  // CC_TEST_TEST_WEB_GRAPHICS_CONTEXT_3D_H_