Restore aura support from Mojo repo.

mandoline/ui/aura/input_method_mojo_linux.cc

Index: mandoline/ui/aura/input_method_mojo_linux.cc
diff --git a/mandoline/ui/aura/input_method_mojo_linux.cc b/mandoline/ui/aura/input_method_mojo_linux.cc
new file mode 100644
index 0000000000000000000000000000000000000000..ea4933fbd17aad81adb5ba801a61e4af17e0cf16
--- /dev/null
+++ b/mandoline/ui/aura/input_method_mojo_linux.cc
@@ -0,0 +1,43 @@
+// Copyright 2015 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 "mandoline/ui/aura/input_method_mojo_linux.h"
+
+#include "ui/base/ime/text_input_client.h"
+#include "ui/events/event.h"
+
+namespace mandoline {
+
+InputMethodMojoLinux::InputMethodMojoLinux(
+    ui::internal::InputMethodDelegate* delegate)
+    : ui::InputMethodAuraLinux(delegate) {
+}
+
+InputMethodMojoLinux::~InputMethodMojoLinux() {}
+
+bool InputMethodMojoLinux::DispatchKeyEvent(const ui::KeyEvent& event) {
+  DCHECK(event.type() == ui::ET_KEY_PRESSED ||
+         event.type() == ui::ET_KEY_RELEASED);
+  DCHECK(system_toplevel_window_focused());
+
+  // If no text input client, do nothing.
+  if (!GetTextInputClient())
+    return DispatchKeyEventPostIME(event);
+
+  // Here is where we change the differ from our base class's logic. Instead of
+  // always dispatching a key down event, and then sending a synthesized
+  // character event, we instead check to see if this is a character event and
+  // send out the key if it is. (We fallback to normal dispatch if it isn't.)
+  if (event.is_char()) {
+    const uint16 ch = event.GetCharacter();
+    if (GetTextInputClient())
+      GetTextInputClient()->InsertChar(ch, event.flags());
+
+    return false;
+  }
+
+  return DispatchKeyEventPostIME(event);
+}
+
+}  // namespace mandoline