Fix an IME regression for <webview> due to missing IPC message param

content/browser/browser_plugin/browser_plugin_guest.cc

Index: content/browser/browser_plugin/browser_plugin_guest.cc
diff --git a/content/browser/browser_plugin/browser_plugin_guest.cc b/content/browser/browser_plugin/browser_plugin_guest.cc
index 8f26ef0690081c2eabc1add1f64474f37874be78..1f985ec5c83d928e1cb8d222785c2a12664a67e8 100644
--- a/content/browser/browser_plugin/browser_plugin_guest.cc
+++ b/content/browser/browser_plugin/browser_plugin_guest.cc
@@ -920,7 +920,10 @@ void BrowserPluginGuest::OnImeCommitText(
                                   replacement_range, relative_cursor_pos));
 }
 
-void BrowserPluginGuest::OnImeFinishComposingText(bool keep_selection) {
+void BrowserPluginGuest::OnImeFinishComposingText(
+    int browser_plugin_instance_id,
+    bool keep_selection) {
+  DCHECK_EQ(browser_plugin_instance_id_, browser_plugin_instance_id);
   Send(new InputMsg_ImeFinishComposingText(routing_id(), keep_selection));
 }