Add GL_EXT_color_buffer_half_float support

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 620 matching lines @@
           .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")) {
+      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,
+          TexImage2D(GL_TEXTURE_2D, 0, GL_RG16F, width, width, 0, GL_RG, _, _))
+          .Times(1)
+          .RetiresOnSaturation();
+      EXPECT_CALL(*gl, CheckFramebufferStatusEXT(GL_FRAMEBUFFER))
+          .Times(1)
+          .RetiresOnSaturation();
+      EXPECT_CALL(*gl,
+                  TexImage2D(GL_TEXTURE_2D, 0, GL_RGBA16F, width, width, 0,
+                             GL_RGBA, _, _))
+          .Times(1)
+          .RetiresOnSaturation();
+      EXPECT_CALL(*gl, CheckFramebufferStatusEXT(GL_FRAMEBUFFER))
+          .Times(1)
+          .RetiresOnSaturation();
+    }
 
     EXPECT_CALL(*gl, DeleteFramebuffersEXT(1, _))
         .Times(1)
         .RetiresOnSaturation();
     EXPECT_CALL(*gl, DeleteTextures(1, _))
         .Times(1)
         .RetiresOnSaturation();
     EXPECT_CALL(*gl, BindFramebufferEXT(GL_FRAMEBUFFER, fb_ids[0]))
         .Times(1)
         .RetiresOnSaturation();
@@ skipping 557 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