Revert 147328 - Current status of patch:

gpu/command_buffer/service/program_cache.h

Index: gpu/command_buffer/service/program_cache.h
===================================================================
--- gpu/command_buffer/service/program_cache.h	(revision 147496)
+++ gpu/command_buffer/service/program_cache.h	(working copy)
@@ -1,122 +0,0 @@
-// 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.
-
-#ifndef GPU_COMMAND_BUFFER_SERVICE_PROGRAM_CACHE_H_
-#define GPU_COMMAND_BUFFER_SERVICE_PROGRAM_CACHE_H_
-
-#include <map>
-#include <string>
-
-#include "base/hash_tables.h"
-#include "base/sha1.h"
-#include "gpu/command_buffer/common/gles2_cmd_format.h"
-#include "gpu/command_buffer/service/shader_manager.h"
-
-namespace gpu {
-namespace gles2 {
-
-// Program cache base class for caching linked gpu programs
-class GPU_EXPORT ProgramCache {
- public:
-  static const size_t kHashLength = base::kSHA1Length;
-
-  typedef std::map<std::string, GLint> LocationMap;
-
-  enum CompiledShaderStatus {
-    COMPILATION_UNKNOWN,
-    COMPILATION_SUCCEEDED
-  };
-
-  enum LinkedProgramStatus {
-    LINK_UNKNOWN,
-    LINK_SUCCEEDED
-  };
-
-  enum ProgramLoadResult {
-    PROGRAM_LOAD_FAILURE,
-    PROGRAM_LOAD_SUCCESS
-  };
-
-  ProgramCache();
-  virtual ~ProgramCache();
-
-  CompiledShaderStatus GetShaderCompilationStatus(
-      const std::string& shader_src) const;
-  void ShaderCompilationSucceeded(const std::string& shader_src);
-
-  LinkedProgramStatus GetLinkedProgramStatus(
-      const std::string& untranslated_a,
-      const std::string& untranslated_b,
-      const LocationMap* bind_attrib_location_map) const;
-
-  virtual ProgramLoadResult LoadLinkedProgram(
-      GLuint program,
-      ShaderManager::ShaderInfo* shader_a,
-      ShaderManager::ShaderInfo* shader_b,
-      const LocationMap* bind_attrib_location_map) const = 0;
-  virtual void SaveLinkedProgram(
-      GLuint program,
-      const ShaderManager::ShaderInfo* shader_a,
-      const ShaderManager::ShaderInfo* shader_b,
-      const LocationMap* bind_attrib_location_map) = 0;
-
-  // clears the cache
-  void Clear();
-
-  // Only for testing
-  void LinkedProgramCacheSuccess(const std::string& shader_a,
-                                 const std::string& shader_b,
-                                 const LocationMap* bind_attrib_location_map);
-
- protected:
-  // called by implementing class after a shader was successfully cached
-  void LinkedProgramCacheSuccess(const std::string& program_hash,
-                                 const std::string& shader_a_hash,
-                                 const std::string& shader_b_hash);
-
-  // result is not null terminated
-  void ComputeShaderHash(const std::string& shader,
-                         char* result) const;
-
-  // result is not null terminated.  hashed shaders are expected to be
-  // kHashLength in length
-  void ComputeProgramHash(
-      const char* hashed_shader_0,
-      const char* hashed_shader_1,
-      const LocationMap* bind_attrib_location_map,
-      char* result) const;
-
-  void Evict(const std::string& program_hash,
-             const std::string& shader_0_hash,
-             const std::string& shader_1_hash);
-
- private:
-  struct CompiledShaderInfo {
-    CompiledShaderInfo() : status(COMPILATION_UNKNOWN), ref_count(0) { }
-    explicit CompiledShaderInfo(CompiledShaderStatus status_)
-        : status(status_),
-          ref_count(0) { }
-
-    CompiledShaderStatus status;
-    size_t ref_count;
-  };
-
-  typedef base::hash_map<std::string,
-                         CompiledShaderInfo> CompileStatusMap;
-  typedef base::hash_map<std::string,
-                         LinkedProgramStatus> LinkStatusMap;
-
-  // called to clear the backend cache
-  virtual void ClearBackend() = 0;
-
-  CompileStatusMap shader_status_;
-  LinkStatusMap link_status_;
-
-  DISALLOW_COPY_AND_ASSIGN(ProgramCache);
-};
-
-}  // namespace gles2
-}  // namespace gpu
-
-#endif  // GPU_COMMAND_BUFFER_SERVICE_PROGRAM_CACHE_H_