view_manager: Add a stub impl for PlatformWindow, and remove PlatformViewportHeadless.

After this change, only a single implementation of PlatformViewport remains. A follow-up CL
will remove PlatformViewport entirely, and directly use PlatformWindow from DisplayManager
instead.

BUG=487881

Committed earlier in https://crrev.com/337068, but reverted in https://crrev.com/337153
because it broke mac-gn builds. Also includes the fix from https://crrev.com/337115

Review URL: https://codereview.chromium.org/1214373004

Cr-Commit-Position: refs/heads/master@{#337176}

5 files changed, 165 insertions, 7 deletions

diff --git a/ui/platform_window/BUILD.gn b/ui/platform_window/BUILD.gn
index feb3176..3dfdc9a 100644
--- a/ui/platform_window/BUILD.gn
+++ b/ui/platform_window/BUILD.gn
@@ -18,18 +18,17 @@ source_set("platform_window") {
 }
 
 group("platform_impls") {
+  deps = [
+    "//ui/platform_window/stub",
+  ]
   if (is_android) {
-    deps = [
+    deps += [
       "//ui/platform_window/android",
       "//ui/platform_window/android:jni_headers",
     ]
   } else if (use_x11) {
-    deps = [
-      "//ui/platform_window/x11",
-    ]
+    deps += [ "//ui/platform_window/x11" ]
   } else if (is_win) {
-    deps = [
-      "//ui/platform_window/win",
-    ]
+    deps += [ "//ui/platform_window/win" ]
   }
 }
diff --git a/ui/platform_window/stub/BUILD.gn b/ui/platform_window/stub/BUILD.gn
new file mode 100644
index 0000000..4a3a42c
--- /dev/null
+++ b/ui/platform_window/stub/BUILD.gn
@@ -0,0 +1,20 @@
+# Copyright 2015 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.
+
+component("stub") {
+  output_name = "stub_window"
+
+  deps = [
+    "//ui/gfx",
+    "//ui/platform_window",
+  ]
+
+  defines = [ "STUB_WINDOW_IMPLEMENTATION" ]
+
+  sources = [
+    "stub_window.cc",
+    "stub_window.h",
+    "stub_window_export.h",
+  ]
+}
diff --git a/ui/platform_window/stub/stub_window.cc b/ui/platform_window/stub/stub_window.cc
new file mode 100644
index 0000000..cace198
--- /dev/null
+++ b/ui/platform_window/stub/stub_window.cc
@@ -0,0 +1,66 @@
+// Copyright 2015 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.
+
+#include "ui/platform_window/stub/stub_window.h"
+
+#include "ui/platform_window/platform_window_delegate.h"
+
+namespace ui {
+
+StubWindow::StubWindow(PlatformWindowDelegate* delegate) : delegate_(delegate) {
+  delegate_->OnAcceleratedWidgetAvailable(gfx::kNullAcceleratedWidget, 1.f);
+}
+
+StubWindow::~StubWindow() {
+}
+
+void StubWindow::Show() {
+}
+
+void StubWindow::Hide() {
+}
+
+void StubWindow::Close() {
+  delegate_->OnClosed();
+}
+
+void StubWindow::SetBounds(const gfx::Rect& bounds) {
+  if (bounds_ == bounds)
+    return;
+  bounds_ = bounds;
+  delegate_->OnBoundsChanged(bounds);
+}
+
+gfx::Rect StubWindow::GetBounds() {
+  return bounds_;
+}
+
+void StubWindow::SetCapture() {
+}
+
+void StubWindow::ReleaseCapture() {
+}
+
+void StubWindow::ToggleFullscreen() {
+}
+
+void StubWindow::Maximize() {
+}
+
+void StubWindow::Minimize() {
+}
+
+void StubWindow::Restore() {
+}
+
+void StubWindow::SetCursor(PlatformCursor cursor) {
+}
+
+void StubWindow::MoveCursorTo(const gfx::Point& location) {
+}
+
+void StubWindow::ConfineCursorToBounds(const gfx::Rect& bounds) {
+}
+
+}  // namespace ui
diff --git a/ui/platform_window/stub/stub_window.h b/ui/platform_window/stub/stub_window.h
new file mode 100644
index 0000000..7c68cd6
--- /dev/null
+++ b/ui/platform_window/stub/stub_window.h
@@ -0,0 +1,44 @@
+// 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.
+
+#ifndef UI_PLATFORM_WINDOW_STUB_STUB_WINDOW_H_
+#define UI_PLATFORM_WINDOW_STUB_STUB_WINDOW_H_
+
+#include "ui/gfx/geometry/rect.h"
+#include "ui/platform_window/platform_window.h"
+#include "ui/platform_window/stub/stub_window_export.h"
+
+namespace ui {
+
+class STUB_WINDOW_EXPORT StubWindow : public PlatformWindow {
+ public:
+  explicit StubWindow(PlatformWindowDelegate* delegate);
+  ~StubWindow() override;
+
+ private:
+  // PlatformWindow:
+  void Show() override;
+  void Hide() override;
+  void Close() override;
+  void SetBounds(const gfx::Rect& bounds) override;
+  gfx::Rect GetBounds() override;
+  void SetCapture() override;
+  void ReleaseCapture() override;
+  void ToggleFullscreen() override;
+  void Maximize() override;
+  void Minimize() override;
+  void Restore() override;
+  void SetCursor(PlatformCursor cursor) override;
+  void MoveCursorTo(const gfx::Point& location) override;
+  void ConfineCursorToBounds(const gfx::Rect& bounds) override;
+
+  PlatformWindowDelegate* delegate_;
+  gfx::Rect bounds_;
+
+  DISALLOW_COPY_AND_ASSIGN(StubWindow);
+};
+
+}  // namespace ui
+
+#endif  // UI_PLATFORM_WINDOW_STUB_STUB_WINDOW_H_
diff --git a/ui/platform_window/stub/stub_window_export.h b/ui/platform_window/stub/stub_window_export.h
new file mode 100644
index 0000000..2d983ed
--- /dev/null
+++ b/ui/platform_window/stub/stub_window_export.h
@@ -0,0 +1,29 @@
+// Copyright 2015 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.
+
+#ifndef UI_PLATFORM_WINDOW_STUB_STUB_WINDOW_EXPORT_H_
+#define UI_PLATFORM_WINDOW_STUB_STUB_WINDOW_EXPORT_H_
+
+#if defined(COMPONENT_BUILD)
+#if defined(WIN32)
+
+#if defined(STUB_WINDOW_IMPLEMENTATION)
+#define STUB_WINDOW_EXPORT __declspec(dllexport)
+#else
+#define STUB_WINDOW_EXPORT __declspec(dllimport)
+#endif  // defined(STUB_WINDOW_IMPLEMENTATION)
+
+#else  // defined(WIN32)
+#if defined(STUB_WINDOW_IMPLEMENTATION)
+#define STUB_WINDOW_EXPORT __attribute__((visibility("default")))
+#else
+#define STUB_WINDOW_EXPORT
+#endif
+#endif
+
+#else  // defined(COMPONENT_BUILD)
+#define STUB_WINDOW_EXPORT
+#endif
+
+#endif  // UI_PLATFORM_WINDOW_STUB_STUB_WINDOW_EXPORT_H