Iterative cleanup for GL programs in GPU process

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>
 
@@ skipping 586 matching lines @@
                  uint32_t max_draw_buffers,
                  uint32_t max_dual_source_draw_buffers,
                  uint32_t max_vertex_attribs,
                  const GpuPreferences& gpu_preferences,
                  FeatureInfo* feature_info);
   ~ProgramManager();
 
   // Must call before destruction.
   void Destroy(bool have_context);
 
+  // Can be called before Destroy to perform expensive cleanup. Will run until
+  // currently possible cleanup is performed, or timeout is reached. Returns
+  // true if all possible cleanup has been performed.
+  bool PreDestroyWithTimeout(bool have_context, const base::TimeTicks& timeout);
+
   // Creates a new program.
   Program* CreateProgram(GLuint client_id, GLuint service_id);
 
   // Gets a program.
   Program* GetProgram(GLuint client_id);
 
   // Gets a client id for a given service id.
   bool GetClientId(GLuint service_id, GLuint* client_id) const;
 
   // Gets the shader cache
@@ skipping 67 matching lines @@
 };
 
 inline const FeatureInfo& Program::feature_info() const {
   return *manager_->feature_info_.get();
 }
 
 }  // namespace gles2
 }  // namespace gpu
 
 #endif  // GPU_COMMAND_BUFFER_SERVICE_PROGRAM_MANAGER_H_