Restore samplers' state across virtualized GL contexts.

gpu/command_buffer/service/gles2_cmd_decoder_unittest_base.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_GLES2_CMD_DECODER_UNITTEST_BASE_H_
 #define GPU_COMMAND_BUFFER_SERVICE_GLES2_CMD_DECODER_UNITTEST_BASE_H_
 
 #include <stddef.h>
 #include <stdint.h>
 
@@ skipping 232 matching lines @@
   void SetupInitStateExpectations(bool es3_capable);
   void ExpectEnableDisable(GLenum cap, bool enable);
 
   // Setups up a shader for testing glUniform.
   void SetupShaderForUniform(GLenum uniform_type);
   void SetupDefaultProgram();
   void SetupCubemapProgram();
   void SetupSamplerExternalProgram();
   void SetupTexture();
 
+  // Sets up a sampler on texture unit 0 for certain ES3-specific tests.
+  void SetupSampler();
+
   // Note that the error is returned as GLint instead of GLenum.
   // This is because there is a mismatch in the types of GLenum and
   // the error values GL_NO_ERROR, GL_INVALID_ENUM, etc. GLenum is
   // typedef'd as unsigned int while the error values are defined as
   // integers. This is problematic for template functions such as
   // EXPECT_EQ that expect both types to be the same.
   GLint GetGLError();
 
   void DoBindBuffer(GLenum target, GLuint client_id, GLuint service_id);
   void DoBindFramebuffer(GLenum target, GLuint client_id, GLuint service_id);
@@ skipping 523 matching lines @@
     if (arg[i] != array[i])
       return false;
   }
   return true;
 }
 
 }  // namespace gles2
 }  // namespace gpu
 
 #endif  // GPU_COMMAND_BUFFER_SERVICE_GLES2_CMD_DECODER_UNITTEST_BASE_H_