Introduce new WebApp header style for hosted apps and fizzy apps on ash.

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

+// 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.
+
+#include "chrome/browser/ui/views/frame/webapp_header_painter_ash.h"
+
+#include "ash/frame/caption_buttons/frame_caption_button.h"
+#include "ash/frame/caption_buttons/frame_caption_button_container_view.h"
+#include "grit/ash_resources.h"
+#include "ui/views/widget/widget.h"
+
+///////////////////////////////////////////////////////////////////////////////
+// WebAppHeaderPainterAsh, public:
+
+WebAppHeaderPainterAsh::WebAppHeaderPainterAsh()
+    : ash::DefaultHeaderPainter(),
+      back_button_(NULL) {
+}
+
+WebAppHeaderPainterAsh::~WebAppHeaderPainterAsh() {
+}
+
+void WebAppHeaderPainterAsh::InitForWebApp(
+    views::Widget* frame,
+    views::View* header_view,
+    ash::FrameCaptionButton* back_button,
+    ash::FrameCaptionButtonContainerView* caption_button_container) {
+  DefaultHeaderPainter::Init(frame, header_view, NULL,
+      caption_button_container);
+
+  DCHECK(back_button);
+  back_button_ = back_button;
+
+  back_button_->SetImages(ash::CAPTION_BUTTON_ICON_BACK,
+                          ash::FrameCaptionButton::ANIMATE_NO,
+                          IDR_AURA_WINDOW_CONTROL_ICON_BACK,
+                          IDR_AURA_WINDOW_CONTROL_ICON_BACK_I,
+                          IDR_AURA_WINDOW_CONTROL_BACKGROUND_H,
+                          IDR_AURA_WINDOW_CONTROL_BACKGROUND_P);
+}
+
+///////////////////////////////////////////////////////////////////////////////
+// WebAppHeaderPainter, private:
+
+// ash::DefaultHeaderPainter:
+void WebAppHeaderPainterAsh::LayoutHeader() {
+  DefaultHeaderPainter::LayoutHeader();
+
+  back_button_->Layout();
+  gfx::Size back_button_size = back_button_->GetPreferredSize();
+  back_button_->SetBounds(
+      0, 0, back_button_size.width(), back_button_size.height());
+}
+
+views::View* WebAppHeaderPainterAsh::GetViewToLeftOfTitle() const {
+  return back_button_;
+}