MacViews: Allow the BridgedNativeWidgetTest to focus its textfield

ui/views/cocoa/bridged_native_widget_unittest.mm

 // Copyright 2014 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #import "ui/views/cocoa/bridged_native_widget.h"
 
 #import <Cocoa/Cocoa.h>
 
 #import "base/mac/foundation_util.h"
 #import "base/mac/mac_util.h"
@@ skipping 66 matching lines @@
     return bridge_;
   }
 
   // internal::NativeWidgetPrivate:
   void InitNativeWidget(const Widget::InitParams& params) override {
     ownership_ = params.ownership;
 
     // Usually the bridge gets initialized here. It is skipped to run extra
     // checks in tests, and so that a second window isn't created.
     delegate()->OnNativeWidgetCreated(true);
+
+    // To allow events to dispatch to a view, it needs a way to get focus.
+    bridge_->SetFocusManager(GetWidget()->GetFocusManager());
   }
 
   void ReorderNativeViews() override {
     // Called via Widget::Init to set the content view. No-op in these tests.
   }
 
  private:
   DISALLOW_COPY_AND_ASSIGN(MockNativeWidgetMac);
 };
 
@@ skipping 46 matching lines @@
   std::string GetText();
 
   // testing::Test:
   void SetUp() override;
   void TearDown() override;
 
  protected:
   scoped_ptr<views::View> view_;
   scoped_ptr<BridgedNativeWidget> bridge_;
   BridgedContentView* ns_view_;  // Weak. Owned by bridge_.
+  base::MessageLoopForUI message_loop_;
 
  private:
   DISALLOW_COPY_AND_ASSIGN(BridgedNativeWidgetTest);
 };
 
 BridgedNativeWidgetTest::BridgedNativeWidgetTest() {
 }
 
 BridgedNativeWidgetTest::~BridgedNativeWidgetTest() {
 }
 
 void BridgedNativeWidgetTest::InstallTextField(const std::string& text) {
   Textfield* textfield = new Textfield();
   textfield->SetText(ASCIIToUTF16(text));
   view_->AddChildView(textfield);
+
+  // Request focus so the InputMethod can dispatch events to the RootView, and
+  // have them delivered to the textfield. Note that focusing a textfield
+  // schedules a task to flash the cursor, so this requires |message_loop_|.
+  textfield->RequestFocus();
+
   [ns_view_ setTextInputClient:textfield];
 }
 
 std::string BridgedNativeWidgetTest::GetText() {
   NSRange range = NSMakeRange(0, NSUIntegerMax);
   NSAttributedString* text =
       [ns_view_ attributedSubstringForProposedRange:range actualRange:NULL];
   return SysNSStringToUTF8([text string]);
 }
 
@@ skipping 321 matching lines @@
   [center postNotificationName:NSWindowDidExitFullScreenNotification
                         object:window];
   EXPECT_EQ(1, [window ignoredToggleFullScreenCount]);  // No change.
   EXPECT_FALSE(bridge()->target_fullscreen_state());
 
   widget_->CloseNow();
 }
 
 }  // namespace test
 }  // namespace views