Implement initial version of browser frame for Aura Android.

This implementation assumes that we have only one root window.

We will need to change ChromeBrowserMainExtraPartsViews::ToolkitInitialized() to call SetHost() to make this CL work.

BUG=550423

Review URL: https://codereview.chromium.org/1410153003

Cr-Commit-Position: refs/heads/master@{#357623}

chrome/browser/ui/views/frame/browser_frame_android.cc

+// 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 "chrome/browser/ui/views/frame/browser_frame_android.h"
+
+#include "chrome/browser/ui/views/frame/browser_shutdown.h"
+#include "chrome/browser/ui/views/frame/browser_view.h"
+#include "ui/aura/window.h"
+#include "ui/aura/window_tree_host_platform.h"
+
+///////////////////////////////////////////////////////////////////////////////
+// BrowserFrameAndroid, public:
+
+// static
+const char BrowserFrameAndroid::kWindowName[] = "BrowserFrameAndroid";
+
+namespace {
+// |g_host| should be set before browser frame instantiation. It is used to get
+// the window which is needed for creating the widget for the browser frame.
+// TODO(moshayedi): crbug.com/551055. This is temporary until we have
+// multi-window support.
+aura::WindowTreeHostPlatform* g_host = nullptr;
+}
+
+BrowserFrameAndroid::BrowserFrameAndroid(BrowserFrame* browser_frame,
+                                         BrowserView* browser_view)
+    : views::NativeWidgetAura(browser_frame), browser_view_(browser_view) {
+  GetNativeWindow()->SetName(kWindowName);
+}
+
+// static
+void BrowserFrameAndroid::SetHost(aura::WindowTreeHostPlatform* host) {
+  g_host = host;
+}
+
+///////////////////////////////////////////////////////////////////////////////
+// BrowserFrameAndroid, views::NativeWidgetAura overrides:
+
+void BrowserFrameAndroid::OnWindowDestroying(aura::Window* window) {
+  // Destroy any remaining WebContents early on. Doing so may result in
+  // calling back to one of the Views/LayoutManagers or supporting classes of
+  // BrowserView. By destroying here we ensure all said classes are valid.
+  DestroyBrowserWebContents(browser_view_->browser());
+  NativeWidgetAura::OnWindowDestroying(window);
+}
+
+////////////////////////////////////////////////////////////////////////////////
+// BrowserFrameAndroid, NativeBrowserFrame implementation:
+
+views::Widget::InitParams BrowserFrameAndroid::GetWidgetParams() {
+  DCHECK(g_host);
+
+  views::Widget::InitParams params;
+  params.native_widget = this;
+  params.context = g_host->window();
+  return params;
+}
+
+bool BrowserFrameAndroid::UseCustomFrame() const {
+  return true;
+}
+
+bool BrowserFrameAndroid::UsesNativeSystemMenu() const {
+  return false;
+}
+
+int BrowserFrameAndroid::GetMinimizeButtonOffset() const {
+  return 0;
+}
+
+bool BrowserFrameAndroid::ShouldSaveWindowPlacement() const {
+  return false;
+}
+
+void BrowserFrameAndroid::GetWindowPlacement(
+    gfx::Rect* bounds,
+    ui::WindowShowState* show_state) const {}
+
+BrowserFrameAndroid::~BrowserFrameAndroid() {}

chrome/browser/ui/views/frame/browser_frame_android.h

+// 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 CHROME_BROWSER_UI_VIEWS_FRAME_BROWSER_FRAME_ANDROID_H_
+#define CHROME_BROWSER_UI_VIEWS_FRAME_BROWSER_FRAME_ANDROID_H_
+
+#include "base/basictypes.h"
+#include "base/memory/scoped_ptr.h"
+#include "chrome/browser/ui/views/frame/native_browser_frame.h"
+#include "ui/aura/window_tree_host_platform.h"
+#include "ui/views/widget/native_widget_aura.h"
+
+class BrowserFrame;
+class BrowserView;
+
+////////////////////////////////////////////////////////////////////////////////
+//  BrowserFrameAndroid
+//
+//  BrowserFrameAndroid is a NativeWidgetAura subclass that provides the window
+//  frame for the Chrome browser window.
+//
+class BrowserFrameAndroid : public views::NativeWidgetAura,
+                            public NativeBrowserFrame {
+ public:
+  static const char kWindowName[];
+
+  BrowserFrameAndroid(BrowserFrame* browser_frame, BrowserView* browser_view);
+
+  BrowserView* browser_view() const { return browser_view_; }
+
+  // Must be called before the browser frame is created.
+  static void SetHost(aura::WindowTreeHostPlatform* host);
+
+ protected:
+  // Overridden from views::NativeWidgetAura:
+  void OnWindowDestroying(aura::Window* window) override;
+
+  // Overridden from NativeBrowserFrame:
+  views::Widget::InitParams GetWidgetParams() override;
+  bool UseCustomFrame() const override;
+  bool UsesNativeSystemMenu() const override;
+  int GetMinimizeButtonOffset() const override;
+  bool ShouldSaveWindowPlacement() const override;
+  void GetWindowPlacement(gfx::Rect* bounds,
+                          ui::WindowShowState* show_state) const override;
+
+  ~BrowserFrameAndroid() override;
+
+ private:
+  class WindowPropertyWatcher;
+
+  // The BrowserView is our ClientView. This is a pointer to it.
+  BrowserView* browser_view_;
+
+  DISALLOW_COPY_AND_ASSIGN(BrowserFrameAndroid);
+};
+
+#endif  // CHROME_BROWSER_UI_VIEWS_FRAME_BROWSER_FRAME_ANDROID_H_

chrome/browser/ui/views/frame/native_browser_frame_factory_android.cc

+// 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 "chrome/browser/ui/views/frame/native_browser_frame_factory.h"
+
+#include "chrome/browser/ui/views/frame/browser_frame_android.h"
+
+NativeBrowserFrame* NativeBrowserFrameFactory::Create(
+    BrowserFrame* browser_frame,
+    BrowserView* browser_view) {
+  return new BrowserFrameAndroid(browser_frame, browser_view);
+}

chrome/chrome_browser_ui.gypi

@@ -2180,6 +2180,8 @@
       'browser/ui/views/frame/browser_command_handler_linux.h',
       'browser/ui/views/frame/browser_frame.cc',
       'browser/ui/views/frame/browser_frame.h',
+      'browser/ui/views/frame/browser_frame_android.cc',
+      'browser/ui/views/frame/browser_frame_android.h',
       'browser/ui/views/frame/browser_frame_common_win.cc',
       'browser/ui/views/frame/browser_frame_common_win.h',
       'browser/ui/views/frame/browser_frame_mac.h',
@@ -2217,6 +2219,7 @@
       'browser/ui/views/frame/native_browser_frame.h',
       'browser/ui/views/frame/native_browser_frame_factory.cc',
       'browser/ui/views/frame/native_browser_frame_factory.h',
+      'browser/ui/views/frame/native_browser_frame_factory_android.cc',
       'browser/ui/views/frame/native_browser_frame_factory_chromeos.cc',
       'browser/ui/views/frame/native_browser_frame_factory_mac.mm',
       'browser/ui/views/frame/system_menu_insertion_delegate_win.cc',