Added support for EXT_frag_depth

gpu/command_buffer/service/shader_translator.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/shader_translator.h"
 
 #include <string.h>
 #include <algorithm>
 
 #include "base/at_exit.h"
@@ skipping 181 matching lines @@
     ShGetInfoLog(compiler_, info_log_.get());
   } else {
     info_log_.reset();
   }
 
   return success;
 }
 
 std::string ShaderTranslator::GetStringForOptionsThatWouldEffectCompilation()
     const {
-  const size_t kNumIntFields = 15;
+  const size_t kNumIntFields = 16;
   const size_t kNumEnumFields = 1;
   const size_t kNumFunctionPointerFields = 1;
   struct MustMatchShBuiltInResource {
     typedef khronos_uint64_t (*FunctionPointer)(const char*, size_t);
     enum Enum {
       kFirst,
     };
     int int_fields[kNumIntFields];
     FunctionPointer pointer_fields[kNumFunctionPointerFields];
     Enum enum_fields[kNumEnumFields];
@@ skipping 28 matching lines @@
       base::IntToString(compiler_options_.OES_EGL_image_external) +
       ":ARB_texture_rectangle:" +
       base::IntToString(compiler_options_.ARB_texture_rectangle) +
       ":EXT_draw_buffers:" +
       base::IntToString(compiler_options_.EXT_draw_buffers) +
       ":FragmentPrecisionHigh:" +
       base::IntToString(compiler_options_.FragmentPrecisionHigh) +
       ":MaxExpressionComplexity:" +
       base::IntToString(compiler_options_.MaxExpressionComplexity) +
       ":MaxCallStackDepth:" +
-      base::IntToString(compiler_options_.MaxCallStackDepth));
+      base::IntToString(compiler_options_.MaxCallStackDepth) +
+      ":EXT_frag_depth:" +
+      base::IntToString(compiler_options_.EXT_frag_depth));
 }
 
 const char* ShaderTranslator::translated_shader() const {
   return translated_shader_.get();
 }
 
 const char* ShaderTranslator::info_log() const {
   return info_log_.get();
 }
 
@@ skipping 35 matching lines @@
   translated_shader_.reset();
   info_log_.reset();
   attrib_map_.clear();
   uniform_map_.clear();
   name_map_.clear();
 }
 
 }  // namespace gles2
 }  // namespace gpu