Get surrounding text from webkit. This CL is for sharing code only.

content/browser/renderer_host/render_widget_host_view_gtk.cc

Index: content/browser/renderer_host/render_widget_host_view_gtk.cc
diff --git a/content/browser/renderer_host/render_widget_host_view_gtk.cc b/content/browser/renderer_host/render_widget_host_view_gtk.cc
index 4c535f63b3c00fdde38ca4a21eeedd275144a4dd..f3196304077ecdb79afad6741e7e0febe0c55eea 100644
--- a/content/browser/renderer_host/render_widget_host_view_gtk.cc
+++ b/content/browser/renderer_host/render_widget_host_view_gtk.cc
@@ -738,7 +738,10 @@ void RenderWidgetHostViewGtk::SetIsLoading(bool is_loading) {
 void RenderWidgetHostViewGtk::ImeUpdateTextInputState(
     ui::TextInputType type,
     bool can_compose_inline,
-    const gfx::Rect& caret_rect) {
+    const gfx::Rect& caret_rect,
+    const string16& surrounding_text,
+    size_t focus,
+    size_t anchor) {
   im_context_->UpdateInputMethodState(type, can_compose_inline, caret_rect);
 }