Fix OSK flickering issue

content/renderer/render_view_browsertest.cc

Index: content/renderer/render_view_browsertest.cc
diff --git a/content/renderer/render_view_browsertest.cc b/content/renderer/render_view_browsertest.cc
index a7e700ff38e465f65fc0f0d6dd2be7bb11333e6b..599f97416a0cfd3fcbdf146edae40934996f1249 100644
--- a/content/renderer/render_view_browsertest.cc
+++ b/content/renderer/render_view_browsertest.cc
@@ -981,6 +981,7 @@ TEST_F(RenderViewImplTest, OnImeTypeChanged) {
     // to activate IMEs.
     view()->UpdateTextInputState(
         RenderWidget::NO_SHOW_IME, RenderWidget::FROM_NON_IME);
+    ProcessPendingMessages();
     const IPC::Message* msg = render_thread_->sink().GetMessageAt(0);
     EXPECT_TRUE(msg != NULL);
     EXPECT_EQ(ViewHostMsg_TextInputStateChanged::ID, msg->type());
@@ -1003,6 +1004,7 @@ TEST_F(RenderViewImplTest, OnImeTypeChanged) {
     // to de-activate IMEs.
     view()->UpdateTextInputState(
           RenderWidget::NO_SHOW_IME, RenderWidget::FROM_NON_IME);
+    ProcessPendingMessages();
     msg = render_thread_->sink().GetMessageAt(0);
     EXPECT_TRUE(msg != NULL);
     EXPECT_EQ(ViewHostMsg_TextInputStateChanged::ID, msg->type());
@@ -1027,6 +1029,7 @@ TEST_F(RenderViewImplTest, OnImeTypeChanged) {
       // message to activate IMEs.
       view()->UpdateTextInputState(
           RenderWidget::NO_SHOW_IME, RenderWidget::FROM_NON_IME);
+      ProcessPendingMessages();
       const IPC::Message* msg = render_thread_->sink().GetMessageAt(0);
       EXPECT_TRUE(msg != NULL);
       EXPECT_EQ(ViewHostMsg_TextInputStateChanged::ID, msg->type());
@@ -1959,6 +1962,7 @@ TEST_F(RenderViewImplTest, MessageOrderInDidChangeSelection) {
 
   view()->handling_input_event_ = true;
   ExecuteJavaScriptForTests("document.getElementById('test').focus();");
+  ProcessPendingMessages();
 
   bool is_input_type_called = false;
   bool is_selection_called = false;