Implement input.ime.sendKeyEvents API.

ui/base/ime/input_method_base.cc

Index: ui/base/ime/input_method_base.cc
diff --git a/ui/base/ime/input_method_base.cc b/ui/base/ime/input_method_base.cc
index e4af2e847995cdde30ed6120aaecff569a8052bb..d66cb94b60da6258d3b13bbb165de02ef2e86c25 100644
--- a/ui/base/ime/input_method_base.cc
+++ b/ui/base/ime/input_method_base.cc
@@ -17,7 +17,9 @@
 namespace ui {
 
 InputMethodBase::InputMethodBase()
-    : delegate_(nullptr), text_input_client_(nullptr) {}
+    : sending_key_event_(false),
+      delegate_(nullptr),
+      text_input_client_(nullptr) {}
 
 InputMethodBase::~InputMethodBase() {
   FOR_EACH_OBSERVER(InputMethodObserver,
@@ -195,4 +197,10 @@ void InputMethodBase::UpdateCompositionText(const CompositionText& composition_,
 
 void InputMethodBase::DeleteSurroundingText(int32_t offset, uint32_t length) {}
 
+void InputMethodBase::SendKeyEvent(KeyEvent* event) {
+  sending_key_event_ = true;
+  DispatchKeyEvent(event);
+  sending_key_event_ = false;
+}
+
 }  // namespace ui