Introduce WebInputMethodController to blink

content/test/layouttest_support.cc

Index: content/test/layouttest_support.cc
diff --git a/content/test/layouttest_support.cc b/content/test/layouttest_support.cc
index 9051eae99019659ca7bad6e99a39028e8f551f40..b3f8f1a6c6fe9a2717e2d0932c97d81e7286834c 100644
--- a/content/test/layouttest_support.cc
+++ b/content/test/layouttest_support.cc
@@ -31,6 +31,7 @@
 #include "content/renderer/gpu/render_widget_compositor.h"
 #include "content/renderer/history_entry.h"
 #include "content/renderer/history_serialization.h"
+#include "content/renderer/input/render_widget_input_handler_delegate.h"
 #include "content/renderer/layout_test_dependencies.h"
 #include "content/renderer/render_frame_impl.h"
 #include "content/renderer/render_thread_impl.h"
@@ -1129,4 +1130,12 @@ void SchedulerRunIdleTasks(const base::Closure& callback) {
   blink::scheduler::RunIdleTasksForTesting(scheduler, callback);
 }
 
+void ForceTextInputStateUpdateForRenderFrame(RenderFrame* frame) {
+  if (auto* render_widget =
+          static_cast<RenderFrameImpl*>(frame)->GetRenderWidget()) {
+    render_widget->UpdateTextInputState(ShowIme::IF_NEEDED,
+                                        ChangeSource::FROM_NON_IME);
+  }
+}
+
 }  // namespace content