Don't expose EXT_color_buffer_half_float to GL 2.x

gpu/command_buffer/service/test_helper.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 "gpu/command_buffer/service/test_helper.h"
 
 #include <stddef.h>
 #include <stdint.h>
 
 #include <algorithm>
@@ skipping 619 matching lines @@
           .Times(1)
           .RetiresOnSaturation();
       EXPECT_CALL(*gl, TexImage2D(GL_TEXTURE_2D, 0, GL_R11F_G11F_B10F,
           width, width, 0, GL_RGB, GL_FLOAT, _))
           .Times(1)
           .RetiresOnSaturation();
       EXPECT_CALL(*gl, CheckFramebufferStatusEXT(GL_FRAMEBUFFER))
           .Times(1)
           .RetiresOnSaturation();
     }
-
-    if (!enable_es3 && !strstr(extensions, "GL_EXT_color_buffer_half_float")) {
+    if (!enable_es3 && !strstr(extensions, "GL_EXT_color_buffer_half_float") &&
+        gl_info.IsAtLeastGL(3, 0)) {
       EXPECT_CALL(
           *gl,
           TexImage2D(GL_TEXTURE_2D, 0, GL_R16F, width, width, 0, GL_RED, _, _))
           .Times(1)
           .RetiresOnSaturation();
       EXPECT_CALL(*gl, CheckFramebufferStatusEXT(GL_FRAMEBUFFER))
           .Times(1)
           .RetiresOnSaturation();
       EXPECT_CALL(
           *gl,
@@ skipping 582 matching lines @@
     GLenum precision,
     bool static_use,
     const std::string& name) {
   return ConstructShaderVariable<sh::OutputVariable>(
       type, array_size, precision, static_use, name);
 }
 
 }  // namespace gles2
 }  // namespace gpu