Aura/ash split: Don't use X11 window borders.

ui/aura/desktop/desktop_root_window_event_filter.cc

Index: ui/aura/desktop/desktop_root_window_event_filter.cc
diff --git a/ui/aura/desktop/desktop_root_window_event_filter.cc b/ui/aura/desktop/desktop_root_window_event_filter.cc
index a1d4bf641e614755d1b2446bd0d3d2bf34dacc78..74dcab48c08ecf875dd9b2e3eb1bfdf41d01e275 100644
--- a/ui/aura/desktop/desktop_root_window_event_filter.cc
+++ b/ui/aura/desktop/desktop_root_window_event_filter.cc
@@ -10,6 +10,8 @@
 #include "ui/aura/focus_manager.h"
 #include "ui/aura/root_window.h"
 #include "ui/aura/window.h"
+#include "ui/aura/window_delegate.h"
+#include "ui/base/hit_test.h"
 #include "ui/base/ime/input_method.h"
 #include "ui/base/ime/input_method_factory.h"
 
@@ -23,6 +25,30 @@ aura::Window* FindFocusableWindowFor(aura::Window* window) {
   return window;
 }
 
+// static
+gfx::NativeCursor CursorForWindowComponent(int window_component) {
+  switch (window_component) {
+    case HTBOTTOM:
+      return ui::kCursorSouthResize;
+    case HTBOTTOMLEFT:
+      return ui::kCursorSouthWestResize;
+    case HTBOTTOMRIGHT:
+      return ui::kCursorSouthEastResize;
+    case HTLEFT:
+      return ui::kCursorWestResize;
+    case HTRIGHT:
+      return ui::kCursorEastResize;
+    case HTTOP:
+      return ui::kCursorNorthResize;
+    case HTTOPLEFT:
+      return ui::kCursorNorthWestResize;
+    case HTTOPRIGHT:
+      return ui::kCursorNorthEastResize;
+    default:
+      return ui::kCursorNull;
+  }
+}
+
 }  // namespace
 
 DesktopRootWindowEventFilter::DesktopRootWindowEventFilter(
@@ -59,11 +85,34 @@ bool DesktopRootWindowEventFilter::PreHandleKeyEvent(Window* target,
 bool DesktopRootWindowEventFilter::PreHandleMouseEvent(
     Window* target,
     MouseEvent* event) {
+  // TODO(erg): It would be nice to merge as much as possible with
+  // ash::RootWindowEventFilter. I'm starting to get at the point where I feel
+  // like I'm copypasting the entire file.
+  if (event->type() == ui::ET_MOUSE_MOVED ||
+      event->type() == ui::ET_MOUSE_PRESSED ||
+      event->type() == ui::ET_MOUSEWHEEL) {
+    gfx::NativeCursor cursor = target->GetCursor(event->location());
+    if (event->flags() & ui::EF_IS_NON_CLIENT) {
+      int window_component =
+          target->delegate()->GetNonClientComponent(event->location());
+      cursor = CursorForWindowComponent(window_component);
+    }
+
+    root_window_->SetCursor(cursor);
+  }
+
   if (event->type() == ui::ET_MOUSE_PRESSED) {
     // Get the active window?
     Window* active = aura::client::GetActivationClient(
         root_window_)->GetActiveWindow();
 
+    int component =
+        target->delegate()->GetNonClientComponent(event->location());
+    if (component != HTCLIENT &&
+        root_window_->DispatchHostWindowDragMovement(component, event)) {
+      return true;
+    }
+
     if (active != target) {
       target->GetFocusManager()->SetFocusedWindow(
           FindFocusableWindowFor(target), event);