[WIP] Add support for Android SuggestionSpans when editing text

third_party/WebKit/Source/core/editing/InputMethodController.h

Index: third_party/WebKit/Source/core/editing/InputMethodController.h
diff --git a/third_party/WebKit/Source/core/editing/InputMethodController.h b/third_party/WebKit/Source/core/editing/InputMethodController.h
index e757a6a3b6d8e0f6c30e66a3170799f28588b0ca..7a33a4c73f35ad16248e434e44d099c4fc04cfe9 100644
--- a/third_party/WebKit/Source/core/editing/InputMethodController.h
+++ b/third_party/WebKit/Source/core/editing/InputMethodController.h
@@ -36,6 +36,7 @@
 #include "platform/heap/Handle.h"
 #include "public/platform/WebTextInputInfo.h"
 #include "public/platform/WebTextInputType.h"
+#include "public/web/WebTextSuggestionInfo.h"
 #include "wtf/Vector.h"
 
 namespace blink {
@@ -82,6 +83,10 @@ class CORE_EXPORT InputMethodController final
   // KeepSelection.
   bool finishComposingText(ConfirmCompositionBehavior);
 
+  void applySuggestionReplacement(int documentMarkerID, int suggestionIndex);
+  void deleteSuggestionHighlight();
+  void closeSuggestionMenu();
+
   // Deletes the existing composition text.
   void cancelComposition();
 
@@ -104,6 +109,9 @@ class CORE_EXPORT InputMethodController final
   void deleteSurroundingText(int before, int after);
   WebTextInputInfo textInputInfo() const;
   WebTextInputType textInputType() const;
+  WebVector<blink::WebTextSuggestionInfo> getTextSuggestionInfosUnderCaret()
+      const;
+  void prepareForTextSuggestionMenuToBeShown();
 
   // Call this when we will change focus.
   void willChangeFocus();
@@ -133,6 +141,7 @@ class CORE_EXPORT InputMethodController final
   void addCompositionUnderlines(const Vector<CompositionUnderline>& underlines,
                                 ContainerNode* rootEditableElement,
                                 unsigned offset);
+  void clearSuggestionMarkersTouchingSelection();
 
   bool insertText(const String&);
   bool insertTextAndMoveCaret(const String&,