gpu: introduce glCopySubTextureCHROMIUM

gpu/command_buffer/client/gles2_implementation_impl_autogen.h

Index: gpu/command_buffer/client/gles2_implementation_impl_autogen.h
diff --git a/gpu/command_buffer/client/gles2_implementation_impl_autogen.h b/gpu/command_buffer/client/gles2_implementation_impl_autogen.h
index 625c7473af16d2f27a780be27faca48f03fbbd15..81dc1e5d4c76ebc482d4ac594a82bf2de582f77a 100644
--- a/gpu/command_buffer/client/gles2_implementation_impl_autogen.h
+++ b/gpu/command_buffer/client/gles2_implementation_impl_autogen.h
@@ -3083,6 +3083,23 @@ void GLES2Implementation::CopyTextureCHROMIUM(GLenum target,
   CheckGLError();
 }
 
+void GLES2Implementation::CopySubTextureCHROMIUM(GLenum target,
+                                                 GLenum source_id,
+                                                 GLenum dest_id,
+                                                 GLint level,
+                                                 GLint xoffset,
+                                                 GLint yoffset) {
+  GPU_CLIENT_SINGLE_THREAD_CHECK();
+  GPU_CLIENT_LOG("[" << GetLogPrefix() << "] glCopySubTextureCHROMIUM("
+                     << GLES2Util::GetStringEnum(target) << ", "
+                     << GLES2Util::GetStringEnum(source_id) << ", "
+                     << GLES2Util::GetStringEnum(dest_id) << ", " << level
+                     << ", " << xoffset << ", " << yoffset << ")");
+  helper_->CopySubTextureCHROMIUM(target, source_id, dest_id, level, xoffset,
+                                  yoffset);
+  CheckGLError();
+}
+
 void GLES2Implementation::GenValuebuffersCHROMIUM(GLsizei n, GLuint* buffers) {
   GPU_CLIENT_LOG("[" << GetLogPrefix() << "] glGenValuebuffersCHROMIUM(" << n
                      << ", " << static_cast<const void*>(buffers) << ")");