[WIP] Add support for Android SuggestionSpans when editing text

third_party/WebKit/Source/core/dom/Document.cpp

Index: third_party/WebKit/Source/core/dom/Document.cpp
diff --git a/third_party/WebKit/Source/core/dom/Document.cpp b/third_party/WebKit/Source/core/dom/Document.cpp
index d0f32230eb9d19460f541d37edbe76016e63dfc1..851ba15ae61e39e753715f9acfea1f2cd6cec970 100644
--- a/third_party/WebKit/Source/core/dom/Document.cpp
+++ b/third_party/WebKit/Source/core/dom/Document.cpp
@@ -4254,7 +4254,7 @@ void Document::didInsertText(Node* text, unsigned offset, unsigned length) {
   for (Range* range : m_ranges)
     range->didInsertText(text, offset, length);
 
-  m_markers->shiftMarkers(text, offset, length);
+  m_markers->shiftMarkers(text, offset, 0, length);
 }
 
 void Document::didRemoveText(Node* text, unsigned offset, unsigned length) {
@@ -4262,7 +4262,7 @@ void Document::didRemoveText(Node* text, unsigned offset, unsigned length) {
     range->didRemoveText(text, offset, length);
 
   m_markers->removeMarkers(text, offset, length);
-  m_markers->shiftMarkers(text, offset + length, 0 - length);
+  m_markers->shiftMarkers(text, offset, length, 0);
 }
 
 void Document::didMergeTextNodes(const Text& mergedNode,