Fix flaky LayerTreeHostCopyRequestTestDeleteTexture test.

cc/test/test_gles2_interface.cc

 // 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.
 
 #include "cc/test/test_gles2_interface.h"
 
 #include "base/logging.h"
 #include "cc/test/test_web_graphics_context_3d.h"
 #include "gpu/GLES2/gl2extchromium.h"
 
@@ skipping 26 matching lines @@
   }
 }
 
 void TestGLES2Interface::GenQueriesEXT(GLsizei n, GLuint* queries) {
   for (GLsizei i = 0; i < n; ++i) {
     queries[i] = test_context_->createQueryEXT();
   }
 }
 
 void TestGLES2Interface::DeleteTextures(GLsizei n, const GLuint* textures) {
-  for (GLsizei i = 0; i < n; ++i) {
-    test_context_->deleteTexture(textures[i]);
-  }
+  test_context_->deleteTextures(n, textures);
 }
 
 void TestGLES2Interface::DeleteBuffers(GLsizei n, const GLuint* buffers) {
   for (GLsizei i = 0; i < n; ++i) {
     test_context_->deleteBuffer(buffers[i]);
   }
 }
 
 void TestGLES2Interface::DeleteFramebuffers(GLsizei n,
                                             const GLuint* framebuffers) {
@@ skipping 336 matching lines @@
   return GL_NO_ERROR;
 }
 
 void TestGLES2Interface::set_test_context(TestWebGraphicsContext3D* context) {
   DCHECK(!test_context_);
   test_context_ = context;
   InitializeTestContext(test_context_);
 }
 
 }  // namespace cc