Introduce WebInputMethodController to blink

content/public/test/layouttest_support.h

Index: content/public/test/layouttest_support.h
diff --git a/content/public/test/layouttest_support.h b/content/public/test/layouttest_support.h
index 13b6a07991e2c6a03c151b4bdcb9ea6ffe20f977..28eb7ac524fffd3f74fddcba64284d9b2acec546 100644
--- a/content/public/test/layouttest_support.h
+++ b/content/public/test/layouttest_support.h
@@ -173,6 +173,10 @@ std::string DumpBackForwardList(std::vector<PageState>& page_state,
 // Run all pending idle tasks immediately, and then invoke callback.
 void SchedulerRunIdleTasks(const base::Closure& callback);
 
+// Causes the RenderWidget corresponding to |render_frame| to update its
+// TextInputState.
+void ForceTextInputStateUpdateForRenderFrame(RenderFrame* render_frame);
+
 }  // namespace content
 
 #endif  // CONTENT_PUBLIC_TEST_LAYOUTTEST_SUPPORT_H_