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

chrome/renderer/spellchecker/spellcheck_provider.h

Index: chrome/renderer/spellchecker/spellcheck_provider.h
diff --git a/chrome/renderer/spellchecker/spellcheck_provider.h b/chrome/renderer/spellchecker/spellcheck_provider.h
index 13d8a2b9e6bd580f33f10c5ee144aec9eb1d8fa1..1a6088bbd83ddd90fafbdb4d409ee5b6a92faa33 100644
--- a/chrome/renderer/spellchecker/spellcheck_provider.h
+++ b/chrome/renderer/spellchecker/spellcheck_provider.h
@@ -18,8 +18,11 @@
 
 class RenderView;
 class SpellCheck;
+
+namespace spellcheck {
 class SpellCheckMarker;
 struct SpellCheckResult;
+}
 
 namespace blink {
 class WebString;
@@ -45,7 +48,7 @@ class SpellCheckProvider
   void RequestTextChecking(
       const base::string16& text,
       blink::WebTextCheckingCompletion* completion,
-      const std::vector<SpellCheckMarker>& markers);
+      const std::vector<spellcheck::SpellCheckMarker>& markers);
 
   // The number of ongoing IPC requests.
   size_t pending_text_request_size() const {
@@ -98,7 +101,7 @@ class SpellCheckProvider
       int identifier,
       bool succeeded,
       const base::string16& text,
-      const std::vector<SpellCheckResult>& results);
+      const std::vector<spellcheck::SpellCheckResult>& results);
 #endif
 
   // Returns whether |text| has word characters, i.e. whether a spellchecker
@@ -110,7 +113,7 @@ class SpellCheckProvider
   void OnRespondTextCheck(
       int identifier,
       const base::string16& line,
-      const std::vector<SpellCheckResult>& results);
+      const std::vector<spellcheck::SpellCheckResult>& results);
   void OnToggleSpellPanel(bool is_currently_visible);
 #endif