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diff --git a/browser/components/translation/cld2/internal/cld2tablesummary.h b/browser/components/translation/cld2/internal/cld2tablesummary.h
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+// Copyright 2013 Google Inc. All Rights Reserved.
+//
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+//     http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+
+//
+// Author: dsites@google.com (Dick Sites)
+//
+
+
+#ifndef I18N_ENCODINGS_CLD2_INTERNAL_CLD2TABLESUMMARY_H_
+#define I18N_ENCODINGS_CLD2_INTERNAL_CLD2TABLESUMMARY_H_
+
+#include "integral_types.h"
+
+namespace CLD2 {
+
+// Hash bucket for four-way associative lookup, indirect probabilities
+// 16 bytes per bucket, 4-byte entries
+typedef struct {
+  uint32 keyvalue[4];   // Upper part of word is hash, lower is indirect prob
+} IndirectProbBucket4;
+
+
+// Expanded version December 2012.
+// Moves cutoff for 6-language vs. 3-language indirects
+// Has list of recognized lang-script combinations
+typedef struct {
+  const IndirectProbBucket4* kCLDTable;
+                                      // Each bucket has four entries, part
+                                      //  key and part indirect subscript
+  const uint32* kCLDTableInd;         // Each entry is three packed lang/prob
+  uint32 kCLDTableSizeOne;            // Indirect subscripts >= this: 2 entries
+  uint32 kCLDTableSize;               // Bucket count
+  uint32 kCLDTableKeyMask;            // Mask hash key
+  uint32 kCLDTableBuildDate;          // yyyymmdd
+  const char* kRecognizedLangScripts; // Character string of lang-Scripts
+                                      //  recognized: "en-Latn az-Arab ..."
+                                      //  Single space delimiter, Random order
+} CLD2TableSummary;
+
+}       // End namespace CLD2
+
+#endif  // I18N_ENCODINGS_CLD2_INTERNAL_CLD2TABLESUMMARY_H_
+
+