Skip DepthTextureTest.RenderTo on a few bots to keep them green

gpu/command_buffer/tests/gl_depth_texture_unittest.cc

 // Copyright (c) 2012 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 <GLES2/gl2.h>
 #include <GLES2/gl2ext.h>
 
 #include "gpu/command_buffer/tests/gl_manager.h"
 #include "gpu/command_buffer/tests/gl_test_utils.h"
 #include "testing/gmock/include/gmock/gmock.h"
@@ skipping 44 matching lines @@
 
 namespace {
 
 struct FormatType {
   GLenum format;
   GLenum type;
 };
 
 }  // anonymous namespace
 
-TEST_F(DepthTextureTest, RenderTo) {
+// crbug.com/135228
+// Fails on Win Intel, Linux Intel; flaky on Linux ATI
+#if ((defined(OS_WIN) || defined(OS_LINUX)) && defined(NDEBUG))
+#define MAYBE_RenderTo FAILS_RenderTo
+#else
+#define MAYBE_RenderTo RenderTo
+#endif
+
+TEST_F(DepthTextureTest, MAYBE_RenderTo) {
   if (!GLTestHelper::HasExtension("GL_CHROMIUM_depth_texture")) {
     return;
   }
 
   bool have_depth_stencil = GLTestHelper::HasExtension(
       "GL_OES_packed_depth_stencil");
 
   static const char* v_shader_str = SHADER(
       attribute vec4 v_position;
       void main()
@@ skipping 123 matching lines @@
         actual_pixels[(kResolution * kResolution - 1) * 4] - actual_pixels[0],
         0xC0);
     GLTestHelper::CheckGLError("no errors", __LINE__);
   }
 }
 
 }  // namespace gpu