aura: Add fullscreen/popups to RenderWidgetHostViewAura.

ui/aura/desktop_host_linux.cc

Index: ui/aura/desktop_host_linux.cc
diff --git a/ui/aura/desktop_host_linux.cc b/ui/aura/desktop_host_linux.cc
index 6d2b4fa0bfab27eff0791fe31be0e6a4a6c537c1..7b4e792fd0a2c9e59768e843e6a73b45910c92a1 100644
--- a/ui/aura/desktop_host_linux.cc
+++ b/ui/aura/desktop_host_linux.cc
@@ -17,6 +17,7 @@
 #include "ui/aura/cursor.h"
 #include "ui/aura/desktop.h"
 #include "ui/aura/event.h"
+#include "ui/base/keycodes/keyboard_codes.h"
 #include "ui/base/touch/touch_factory.h"
 #include "ui/base/x/x11_util.h"
 #include "ui/gfx/compositor/layer.h"
@@ -180,6 +181,19 @@ int CoalescePendingXIMotionEvents(const XEvent* xev, XEvent* last_event) {
   return num_coalesed;
 }
 
+// We emulate Windows' WM_KEYDOWN and WM_CHAR messages.  WM_CHAR events are only
+// generated for certain keys; see
+// http://msdn.microsoft.com/en-us/library/windows/desktop/ms646268(v=vs.85).aspx
+bool ShouldSendCharEventForKeyboardCode(ui::KeyboardCode keycode) {
+  return (keycode >= ui::VKEY_0 && keycode <= ui::VKEY_9) ||
+         (keycode >= ui::VKEY_A && keycode <= ui::VKEY_Z) ||
+         keycode == ui::VKEY_BACK ||
+         keycode == ui::VKEY_RETURN ||
+         keycode == ui::VKEY_ESCAPE ||
+         // TODO: SHIFT+ENTER (linefeed)?
+         keycode == ui::VKEY_TAB;
+}
+
 class DesktopHostLinux : public DesktopHost {
  public:
   explicit DesktopHostLinux(const gfx::Rect& bounds);
@@ -256,8 +270,10 @@ base::MessagePumpDispatcher::DispatchStatus DesktopHostLinux::Dispatch(
     case KeyPress: {
       KeyEvent keydown_event(xev, false);
       handled = desktop_->DispatchKeyEvent(&keydown_event);
-      KeyEvent char_event(xev, true);
-      handled |= desktop_->DispatchKeyEvent(&char_event);
+      if (ShouldSendCharEventForKeyboardCode(keydown_event.key_code())) {
+        KeyEvent char_event(xev, true);
+        handled |= desktop_->DispatchKeyEvent(&char_event);
+      }
       break;
     }
     case KeyRelease: {