Use GpuPreferences to avoid directly accessing switches in gpu related code

gpu/command_buffer/service/program_manager.h

 // 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_MANAGER_H_
 #define GPU_COMMAND_BUFFER_SERVICE_PROGRAM_MANAGER_H_
 
 #include <stddef.h>
 #include <stdint.h>
 
 #include <map>
 #include <string>
 #include <vector>
 #include "base/logging.h"
 #include "base/macros.h"
 #include "base/memory/ref_counted.h"
 #include "gpu/command_buffer/service/common_decoder.h"
 #include "gpu/command_buffer/service/gl_utils.h"
 #include "gpu/command_buffer/service/gles2_cmd_decoder.h"
 #include "gpu/command_buffer/service/shader_manager.h"
 #include "gpu/gpu_export.h"
 
 namespace gpu {
+
+struct GpuPreferences;
+
 namespace gles2 {
 
 class FeatureInfo;
 class ProgramCache;
 class ProgramManager;
 class Shader;
 class ShaderManager;
-class FeatureInfo;
 
 // This is used to track which attributes a particular program needs
 // so we can verify at glDrawXXX time that every attribute is either disabled
 // or if enabled that it points to a valid source.
 class GPU_EXPORT Program : public base::RefCounted<Program> {
  public:
   static const int kMaxAttachedShaders = 2;
 
   enum VaryingsPackingOption {
     kCountOnlyStaticallyUsed,
@@ skipping 493 matching lines @@
   // glBindFragDataLocation() and ..IndexedEXT() calls.
   LocationIndexMap bind_program_output_location_index_map_;
 };
 
 // Tracks the Programs.
 //
 // NOTE: To support shared resources an instance of this class will
 // need to be shared by multiple GLES2Decoders.
 class GPU_EXPORT ProgramManager {
  public:
-  explicit ProgramManager(ProgramCache* program_cache,
-                          uint32_t max_varying_vectors,
-                          uint32_t max_dual_source_draw_buffers,
-                          FeatureInfo* feature_info);
+  ProgramManager(ProgramCache* program_cache,
+                 uint32_t max_varying_vectors,
+                 uint32_t max_dual_source_draw_buffers,
+                 const GpuPreferences& gpu_preferences,
+                 FeatureInfo* feature_info);
   ~ProgramManager();
 
   // Must call before destruction.
   void Destroy(bool have_context);
 
   // Creates a new program.
   Program* CreateProgram(GLuint client_id, GLuint service_id);
 
   // Gets a program.
   Program* GetProgram(GLuint client_id);
@@ skipping 52 matching lines @@
   bool have_context_;
 
   // Used to clear uniforms.
   std::vector<uint8_t> zero_;
 
   ProgramCache* program_cache_;
 
   uint32_t max_varying_vectors_;
   uint32_t max_dual_source_draw_buffers_;
 
+  const GpuPreferences& gpu_preferences_;
   scoped_refptr<FeatureInfo> feature_info_;
 
   DISALLOW_COPY_AND_ASSIGN(ProgramManager);
 };
 
 inline const FeatureInfo& Program::feature_info() const {
   return *manager_->feature_info_.get();
 }
 
 }  // namespace gles2
 }  // namespace gpu
 
 #endif  // GPU_COMMAND_BUFFER_SERVICE_PROGRAM_MANAGER_H_