Revert r128507 "Revert r128436 "relanding: disabled workspace_window_resizer test. fixed access-aft…

ui/aura/root_window_host_linux.cc

Index: ui/aura/root_window_host_linux.cc
diff --git a/ui/aura/root_window_host_linux.cc b/ui/aura/root_window_host_linux.cc
index 8fa1cec4e325326dea60c245eddb87f04ff57dfd..aa528b9414a75ea3f03097e382dc27dbe444ab84 100644
--- a/ui/aura/root_window_host_linux.cc
+++ b/ui/aura/root_window_host_linux.cc
@@ -6,13 +6,17 @@
 
 #include <X11/cursorfont.h>
 #include <X11/extensions/XInput2.h>
+#include <X11/extensions/Xrandr.h>
 #include <algorithm>
 
 #include "base/message_pump_x.h"
+#include "base/stl_util.h"
 #include "ui/aura/cursor.h"
 #include "ui/aura/dispatcher_linux.h"
 #include "ui/aura/env.h"
 #include "ui/aura/event.h"
+#include "ui/aura/monitor.h"
+#include "ui/aura/monitor_change_observer_x11.h"
 #include "ui/aura/monitor_manager.h"
 #include "ui/aura/root_window.h"
 #include "ui/base/keycodes/keyboard_codes.h"
@@ -276,7 +280,8 @@ RootWindowHostLinux::RootWindowHostLinux(const gfx::Rect& bounds)
       x_root_window_(DefaultRootWindow(xdisplay_)),
       current_cursor_(aura::kCursorNull),
       cursor_shown_(true),
-      bounds_(bounds) {
+      bounds_(bounds),
+      focus_when_shown_(false) {
   XSetWindowAttributes swa;
   memset(&swa, 0, sizeof(swa));
   swa.background_pixmap = None;
@@ -299,7 +304,6 @@ RootWindowHostLinux::RootWindowHostLinux(const gfx::Rect& bounds)
                     StructureNotifyMask | PropertyChangeMask |
                     PointerMotionMask;
   XSelectInput(xdisplay_, xwindow_, event_mask);
-  XSelectInput(xdisplay_, x_root_window_, StructureNotifyMask);
   XFlush(xdisplay_);
 
   if (base::MessagePumpForUI::HasXInput2())
@@ -361,13 +365,6 @@ base::MessagePumpDispatcher::DispatchStatus RootWindowHostLinux::Dispatch(
         root_window_->SetCapture(NULL);
       break;
     case ConfigureNotify: {
-      if (xev->xconfigure.window == x_root_window_) {
-        Env::GetInstance()->monitor_manager()->OnNativeMonitorResized(
-            gfx::Size(xev->xconfigure.width, xev->xconfigure.height));
-        handled = true;
-        break;
-      }
-
       DCHECK_EQ(xwindow_, xev->xconfigure.window);
       DCHECK_EQ(xwindow_, xev->xconfigure.event);
 
@@ -441,7 +438,7 @@ base::MessagePumpDispatcher::DispatchStatus RootWindowHostLinux::Dispatch(
     case MapNotify: {
       // If there's no window manager running, we need to assign the X input
       // focus to our host window.
-      if (!IsWindowManagerPresent())
+      if (!IsWindowManagerPresent() && focus_when_shown_)
         XSetInputFocus(xdisplay_, xwindow_, RevertToNone, CurrentTime);
       handled = true;
       break;
@@ -483,6 +480,12 @@ base::MessagePumpDispatcher::DispatchStatus RootWindowHostLinux::Dispatch(
       handled = root_window_->DispatchMouseEvent(&mouseev);
       break;
     }
+    default: {
+      // TODO(oshima): We probably should change DispatcherLinux so
+      // that it can directly dispatch the event to montor change
+      // observer.
+      Env::GetInstance()->monitor_change_observer()->Dispatch(xev);
+    }
   }
   return handled ? base::MessagePumpDispatcher::EVENT_PROCESSED :
       base::MessagePumpDispatcher::EVENT_IGNORED;
@@ -510,8 +513,10 @@ gfx::Rect RootWindowHostLinux::GetBounds() const {
 
 void RootWindowHostLinux::SetBounds(const gfx::Rect& bounds) {
   bool size_changed = bounds_.size() != bounds.size();
-  if (bounds == bounds_)
+  if (bounds == bounds_) {
+    root_window_->SchedulePaintInRect(root_window_->bounds());
     return;
+  }
   if (bounds.size() != bounds_.size())
     XResizeWindow(xdisplay_, xwindow_, bounds.width(), bounds.height());
   if (bounds.origin() != bounds_.origin())
@@ -593,6 +598,17 @@ void RootWindowHostLinux::MoveCursorTo(const gfx::Point& location) {
       location.y());
 }
 
+void RootWindowHostLinux::SetFocusWhenShown(bool focus_when_shown) {
+  static const char* k_NET_WM_USER_TIME = "_NET_WM_USER_TIME";
+  focus_when_shown_ = focus_when_shown;
+  if (IsWindowManagerPresent() && !focus_when_shown_) {
+    ui::SetIntProperty(xwindow_,
+                       k_NET_WM_USER_TIME,
+                       k_NET_WM_USER_TIME,
+                       0);
+  }
+}
+
 void RootWindowHostLinux::PostNativeEvent(
     const base::NativeEvent& native_event) {
   DCHECK(xwindow_);