Ash: Use right edge of screen to scroll maximized windows

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

 // Copyright (c) 2012 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_aura.h"
 
+#include "ash/wm/frame_painter.h"
+#include "ash/wm/window_util.h"
 #include "chrome/app/chrome_command_ids.h"
 #include "chrome/browser/ui/views/frame/browser_view.h"
 #include "chrome/browser/ui/views/frame/system_menu_model_delegate.h"
 #include "grit/chromium_strings.h"
 #include "grit/generated_resources.h"
 #include "ui/aura/client/aura_constants.h"
 #include "ui/aura/window.h"
 #include "ui/aura/window_observer.h"
 #include "ui/base/hit_test.h"
 #include "ui/base/l10n/l10n_util.h"
@@ skipping 12 matching lines @@
                                  BrowserFrame* browser_frame)
       : browser_frame_aura_(browser_frame_aura),
         browser_frame_(browser_frame) {}
 
   virtual void OnWindowPropertyChanged(aura::Window* window,
                                        const void* key,
                                        intptr_t old) OVERRIDE {
     if (key != aura::client::kShowStateKey)
       return;
 
+    // Maximized windows don't want resize handles overlapping the content area,
+    // because when the user moves the cursor to the right screen edge we want
+    // them to be able to hit the scroll bar.
+    window->SetHitTestBoundsOverride(
+        ash::FramePainter::kResizeOutsideBoundsSize,
+        ash::wm::IsWindowMaximized(window) ?
+            0 :
+            ash::FramePainter::kResizeInsideBoundsSize);
+
     // Allow the frame to be replaced when maximizing an app.
     if (browser_frame_->non_client_view() &&
         browser_frame_aura_->browser_view()->browser()->is_app())
       browser_frame_->non_client_view()->UpdateFrame();
 
     // When migrating from regular ChromeOS to Aura, windows can have saved
     // restore bounds that are exactly equal to the maximized bounds.  Thus when
     // you hit maximize, there is no resize and the layout doesn't get
     // refreshed. This can also theoretically happen if a user drags a window to
     // 0,0 then resizes it to fill the workspace, then hits maximize.  We need
@@ skipping 102 matching lines @@
 
 ////////////////////////////////////////////////////////////////////////////////
 // NativeBrowserFrame, public:
 
 // static
 NativeBrowserFrame* NativeBrowserFrame::CreateNativeBrowserFrame(
     BrowserFrame* browser_frame,
     BrowserView* browser_view) {
   return new BrowserFrameAura(browser_frame, browser_view);
 }