Delete IsAtLeastOS10_9() and IsAtMostOS10_9()

ui/gl/test/gl_image_test_template.h

 // 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.
 
 // This file defines tests that implementations of GLImage should pass in order
 // to be conformant.
 
 #ifndef UI_GL_TEST_GL_IMAGE_TEST_TEMPLATE_H_
 #define UI_GL_TEST_GL_IMAGE_TEST_TEMPLATE_H_
 
@@ skipping 205 matching lines @@
 
 template <typename GLImageTestDelegate>
 class GLImageZeroInitializeTest : public GLImageTest<GLImageTestDelegate> {};
 
 // This test verifies that if an uninitialized image is bound to a texture, the
 // result is zero-initialized.
 TYPED_TEST_CASE_P(GLImageZeroInitializeTest);
 
 TYPED_TEST_P(GLImageZeroInitializeTest, ZeroInitialize) {
 #if defined(OS_MACOSX)
-  // This functionality is disabled on Mavericks because it breaks PDF
-  // rendering. https://crbug.com/594343.
-  if (base::mac::IsOS10_9())
-    return;
-
-  // This functionality is disabled on Yosemite because it is suspected of
-  // causing performance regressions on old hardware. https://crbug.com/606850.
-  if (base::mac::IsOS10_10())
+  // This functionality is disabled on Mavericks and Yosemite because…
+  // - On Mavericks, it breaks PDF rendering: https://crbug.com/594343.
+  // - On Yosemite, it is suspected of causing performance regressions on old
+  //   hardware: https://crbug.com/606850.
+  if (!base::mac::IsAtLeastOS10_11())
     return;
 #endif
 
   const gfx::Size image_size(256, 256);
 
   GLuint framebuffer =
       GLTestHelper::SetupFramebuffer(image_size.width(), image_size.height());
   ASSERT_TRUE(framebuffer);
   glBindFramebufferEXT(GL_FRAMEBUFFER, framebuffer);
   glViewport(0, 0, image_size.width(), image_size.height());
@@ skipping 139 matching lines @@
   }
 }
 
 // The GLImageCopyTest test case verifies that the GLImage implementation
 // handles CopyTexImage correctly.
 REGISTER_TYPED_TEST_CASE_P(GLImageCopyTest, CopyTexImage);
 
 }  // namespace gl
 
 #endif  // UI_GL_TEST_GL_IMAGE_TEST_TEMPLATE_H_