Command buffer: Fix bugs for drawing when the type of vertex attrib is a packed type

gpu/command_buffer/service/vertex_attrib_manager.cc

 // 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.
 
 #include "gpu/command_buffer/service/vertex_attrib_manager.h"
 
 #include <stdint.h>
 
 #include <list>
 
@@ skipping 70 matching lines @@
 
   // The number of elements that can be accessed.
   GLsizeiptr buffer_size = buffer_->size();
   if (offset_ > buffer_size || real_stride_ == 0) {
     return false;
   }
 
   uint32_t usable_size = buffer_size - offset_;
   GLuint num_elements = usable_size / real_stride_ +
       ((usable_size % real_stride_) >=
-       (GLES2Util::GetGLTypeSizeForTexturesAndBuffers(type_) * size_) ? 1 : 0);
+       (GLES2Util::GetGroupSizeForBufferType(size_, type_)) ? 1 : 0);
   return index < num_elements;
 }
 
 VertexAttribManager::VertexAttribManager()
     : num_fixed_attribs_(0),
       element_array_buffer_(NULL),
       manager_(NULL),
       deleted_(false),
       service_id_(0) {
 }
@@ skipping 172 matching lines @@
   if (current_buffer_id != kInitialBufferId) {
     // Restore the buffer binding.
     decoder->RestoreBufferBindings();
   }
 
   return true;
 }
 
 }  // namespace gles2
 }  // namespace gpu