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

ui/base/ime/input_method_auralinux.cc

Index: ui/base/ime/input_method_auralinux.cc
diff --git a/ui/base/ime/input_method_auralinux.cc b/ui/base/ime/input_method_auralinux.cc
index 4248975079f4b41df274933d05cbcfadf8eebd50..fc8eec5382a55e8dd9fd47d546de227c5e792b8f 100644
--- a/ui/base/ime/input_method_auralinux.cc
+++ b/ui/base/ime/input_method_auralinux.cc
@@ -90,6 +90,9 @@ void InputMethodAuraLinux::DispatchKeyEvent(ui::KeyEvent* event) {
   if (text_input_type_ != TEXT_INPUT_TYPE_PASSWORD &&
       GetEngine() && GetEngine()->IsInterestedInKeyEvent() &&
       (!filtered || NeedInsertChar())) {
+    // Make true that we don't handle IME API calling of setComposition and
+    // commitText while the extension is processing key event.
+    handling_key_event_ = true;
     ui::IMEEngineHandlerInterface::KeyEventDoneCallback callback =
         base::Bind(&InputMethodAuraLinux::ProcessKeyEventDone,
                    weak_ptr_factory_.GetWeakPtr(),
@@ -103,6 +106,8 @@ void InputMethodAuraLinux::DispatchKeyEvent(ui::KeyEvent* event) {
 void InputMethodAuraLinux::ProcessKeyEventDone(ui::KeyEvent* event,
                                                bool filtered,
                                                bool is_handled) {
+  handling_key_event_ = false;
+
   DCHECK(event);
   if (is_handled)
     return;