Create a spellcheck component that will allow any embedder to reuse common functionality.

components/spellcheck/common/spellcheck_result.h

Index: components/spellcheck/common/spellcheck_result.h
diff --git a/chrome/common/spellcheck_result.h b/components/spellcheck/common/spellcheck_result.h
similarity index 84%
rename from chrome/common/spellcheck_result.h
rename to components/spellcheck/common/spellcheck_result.h
index 33ff5d48bd2a7310d0697ef1c175a97287a105ff..c81ceb17833c9e0d04102087633a489a0ccaecdf 100644
--- a/chrome/common/spellcheck_result.h
+++ b/components/spellcheck/common/spellcheck_result.h
@@ -2,13 +2,15 @@
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
-#ifndef CHROME_COMMON_SPELLCHECK_RESULT_H_
-#define CHROME_COMMON_SPELLCHECK_RESULT_H_
+#ifndef COMPONENTS_SPELLCHECK_COMMON_SPELLCHECK_RESULT_H_
+#define COMPONENTS_SPELLCHECK_COMMON_SPELLCHECK_RESULT_H_
 
 #include <stdint.h>
 
 #include "base/strings/string16.h"
 
+namespace spellcheck {
+
 // This class mirrors blink::WebTextCheckingResult which holds a
 // misspelled range inside the checked text. It also contains a
 // possible replacement of the misspelling if it is available.
@@ -40,4 +42,6 @@ struct SpellCheckResult {
   uint32_t hash;
 };
 
-#endif  // CHROME_COMMON_SPELLCHECK_RESULT_H_
+} // namespace spellcheck
+
+#endif  // COMPONENTS_SPELLCHECK_COMMON_SPELLCHECK_RESULT_H_