Introduce WebInputMethodController to blink

content/renderer/browser_plugin/browser_plugin.cc

Index: content/renderer/browser_plugin/browser_plugin.cc
diff --git a/content/renderer/browser_plugin/browser_plugin.cc b/content/renderer/browser_plugin/browser_plugin.cc
index 6889d05ef8585018faab282793967e7ed670d287..6ada3a64e145b5eb06c593128cc59d8be0ff7a7b 100644
--- a/content/renderer/browser_plugin/browser_plugin.cc
+++ b/content/renderer/browser_plugin/browser_plugin.cc
@@ -571,10 +571,12 @@ bool BrowserPlugin::commitText(const blink::WebString& text,
 }
 
 bool BrowserPlugin::finishComposingText(
-    blink::WebWidget::ConfirmCompositionBehavior selection_behavior) {
+    blink::WebInputMethodController::ConfirmCompositionBehavior
+        selection_behavior) {
   if (!attached())
     return false;
-  bool keep_selection = (selection_behavior == blink::WebWidget::KeepSelection);
+  bool keep_selection =
+      (selection_behavior == blink::WebInputMethodController::KeepSelection);
   BrowserPluginManager::Get()->Send(
       new BrowserPluginHostMsg_ImeFinishComposingText(keep_selection));
   // TODO(kochi): This assumes the IPC handling always succeeds.