[InputEvent] Add 'beforeinput' logic in |will*()| and guarded by a flag (3/11)

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

Index: third_party/WebKit/Source/core/editing/EditingUtilities.h
diff --git a/third_party/WebKit/Source/core/editing/EditingUtilities.h b/third_party/WebKit/Source/core/editing/EditingUtilities.h
index cc83fb609ec6479173149750eb91518d0a86910e..82d76463c15fc038591d6bbe42c7fa14e138954e 100644
--- a/third_party/WebKit/Source/core/editing/EditingUtilities.h
+++ b/third_party/WebKit/Source/core/editing/EditingUtilities.h
@@ -58,6 +58,7 @@ enum class DeleteDirection {
   Backward,
 };
 
+enum class EditCommandSource;
 class CompositeEditCommand;
 class Document;
 class Element;
@@ -412,10 +413,12 @@ String stringWithRebalancedWhitespace(const String&,
 const String& nonBreakingSpaceString();
 
 // -------------------------------------------------------------------------
-// Events
+// InputEvent
 // -------------------------------------------------------------------------
 
-// Functions dispatch InputEvent
+// TODO(chongz): Remove the following 4 |dispatch*()|after we have moved all
+// 'beforeinput' logic into |CompositeEditCommand.cpp|.
+// https://crbug.com/670035
 DispatchEventResult dispatchBeforeInputInsertText(EventTarget*,
                                                   const String& data);
 DispatchEventResult dispatchBeforeInputFromComposition(
@@ -441,6 +444,19 @@ InputEvent::InputType deletionInputTypeFromTextGranularity(DeleteDirection,
 InputEvent::EventIsComposing isComposingFromCommand(
     const CompositeEditCommand*);
 
+// TODO(chongz): Move |dispatchBeforeInputEvent()| to 'CompositeEditCommand.cpp'
+// after we've resolved the ordering issue WRT 'compositionupdate'.
+// https://crbug.com/675820
+bool dispatchBeforeInputEvent(EditCommandSource,
+                              LocalFrame*,
+                              Node* target,
+                              InputEvent::InputType,
+                              const String& data,
+                              DataTransfer*,
+                              InputEvent::EventCancelable,
+                              InputEvent::EventIsComposing,
+                              const RangeVector*);
+
 }  // namespace blink
 
 #endif