Upgrade Tex{Sub}Image{2|3}D to handle ES3 unpack parameters.

gpu/command_buffer/client/gles2_implementation.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_CLIENT_GLES2_IMPLEMENTATION_H_
 #define GPU_COMMAND_BUFFER_CLIENT_GLES2_IMPLEMENTATION_H_
 
 #include <stddef.h>
 #include <stdint.h>
 
@@ skipping 279 matching lines @@
   friend class VertexArrayObjectManager;
   friend class QueryTracker;
 
   // Used to track whether an extension is available
   enum ExtensionStatus {
       kAvailableExtensionStatus,
       kUnavailableExtensionStatus,
       kUnknownExtensionStatus
   };
 
+  enum Dimension {
+      k2D,
+      k3D,
+  };
+
+
   // Base class for mapped resources.
   struct MappedResource {
     MappedResource(GLenum _access, int _shm_id, void* mem, unsigned int offset)
         : access(_access),
           shm_id(_shm_id),
           shm_memory(mem),
           shm_offset(offset) {
     }
 
     // access mode. Currently only GL_WRITE_ONLY is valid
@@ skipping 376 matching lines @@
 
   void RemoveMappedBufferRangeByTarget(GLenum target);
   void RemoveMappedBufferRangeById(GLuint buffer);
   void ClearMappedBufferRangeMap();
 
   void DrawElementsImpl(GLenum mode, GLsizei count, GLenum type,
                         const void* indices, const char* func_name);
   void UpdateCachedExtensionsIfNeeded();
   void InvalidateCachedExtensions();
 
+  PixelStoreParams GetUnpackParameters(Dimension dimension);
+
   GLES2Util util_;
   GLES2CmdHelper* helper_;
   TransferBufferInterface* transfer_buffer_;
   std::string last_error_;
   DebugMarkerManager debug_marker_manager_;
   std::string this_in_hex_;
 
   std::queue<int32_t> swap_buffers_tokens_;
   std::queue<int32_t> rate_limit_tokens_;
 
@@ skipping 170 matching lines @@
 
 inline bool GLES2Implementation::GetTexParameterivHelper(
     GLenum /* target */, GLenum /* pname */, GLint* /* params */) {
   return false;
 }
 
 }  // namespace gles2
 }  // namespace gpu
 
 #endif  // GPU_COMMAND_BUFFER_CLIENT_GLES2_IMPLEMENTATION_H_