Implement chrome.input.ime.setComposition/commitText API.

chrome/browser/chromeos/input_method/input_method_engine.h

Index: chrome/browser/chromeos/input_method/input_method_engine.h
diff --git a/chrome/browser/chromeos/input_method/input_method_engine.h b/chrome/browser/chromeos/input_method/input_method_engine.h
index 9420a48cafe676f5e244e91a1080495623a7df98..9199e397337eb08d44a1e9abe8a810b1a97425a2 100644
--- a/chrome/browser/chromeos/input_method/input_method_engine.h
+++ b/chrome/browser/chromeos/input_method/input_method_engine.h
@@ -151,6 +151,13 @@ class InputMethodEngine : public ::input_method::InputMethodEngineBase {
   // Enables overriding input view page to Virtual Keyboard window.
   void EnableInputView();
 
+  // input_method::InputMethodEngineBase:
+  void UpdateComposition(const ui::CompositionText& composition_text,
+                         uint32_t cursor_pos,
+                         bool is_visible) override;
+  void CommitTextToInputContext(int context_id,
+                                const std::string& text) override;
+
   // The current candidate window.
   scoped_ptr<ui::CandidateWindow> candidate_window_;