Moving src/webrtc into src/.

In order to eliminate the WebRTC Subtree mirror in Chromium, 
WebRTC is moving the content of the src/webrtc directory up
to the src/ directory.

NOPRESUBMIT=true
NOTREECHECKS=true
NOTRY=true
TBR=tommi@webrtc.org

Bug: chromium:611808
Change-Id: Iac59c5b51b950f174119565bac87955a7994bc38
Reviewed-on: https://webrtc-review.googlesource.com/1560
Commit-Queue: Mirko Bonadei <mbonadei@webrtc.org>
Reviewed-by: Henrik Kjellander <kjellander@webrtc.org>
Cr-Commit-Position: refs/heads/master@{#19845}

modules/desktop_capture/x11/shared_x_display.h

@@ -0,0 +1,87 @@
+/*
+ *  Copyright (c) 2013 The WebRTC project authors. All Rights Reserved.
+ *
+ *  Use of this source code is governed by a BSD-style license
+ *  that can be found in the LICENSE file in the root of the source
+ *  tree. An additional intellectual property rights grant can be found
+ *  in the file PATENTS.  All contributing project authors may
+ *  be found in the AUTHORS file in the root of the source tree.
+ */
+
+#ifndef WEBRTC_MODULES_DESKTOP_CAPTURE_X11_SHARED_X_DISPLAY_H_
+#define WEBRTC_MODULES_DESKTOP_CAPTURE_X11_SHARED_X_DISPLAY_H_
+
+#include <map>
+#include <vector>
+
+#include <string>
+
+#include "webrtc/rtc_base/constructormagic.h"
+#include "webrtc/rtc_base/scoped_ref_ptr.h"
+#include "webrtc/system_wrappers/include/atomic32.h"
+
+// Including Xlib.h will involve evil defines (Bool, Status, True, False), which
+// easily conflict with other headers.
+typedef struct _XDisplay Display;
+typedef union _XEvent XEvent;
+
+namespace webrtc {
+
+// A ref-counted object to store XDisplay connection.
+class SharedXDisplay {
+ public:
+  class XEventHandler {
+   public:
+    virtual ~XEventHandler() {}
+
+    // Processes XEvent. Returns true if the event has been handled.
+    virtual bool HandleXEvent(const XEvent& event) = 0;
+  };
+
+  // Takes ownership of |display|.
+  explicit SharedXDisplay(Display* display);
+
+  // Creates a new X11 Display for the |display_name|. NULL is returned if X11
+  // connection failed. Equivalent to CreateDefault() when |display_name| is
+  // empty.
+  static rtc::scoped_refptr<SharedXDisplay> Create(
+      const std::string& display_name);
+
+  // Creates X11 Display connection for the default display (e.g. specified in
+  // DISPLAY). NULL is returned if X11 connection failed.
+  static rtc::scoped_refptr<SharedXDisplay> CreateDefault();
+
+  void AddRef() { ++ref_count_; }
+  void Release() {
+    if (--ref_count_ == 0)
+      delete this;
+  }
+
+  Display* display() { return display_; }
+
+  // Adds a new event |handler| for XEvent's of |type|.
+  void AddEventHandler(int type, XEventHandler* handler);
+
+  // Removes event |handler| added using |AddEventHandler|. Doesn't do anything
+  // if |handler| is not registered.
+  void RemoveEventHandler(int type, XEventHandler* handler);
+
+  // Processes pending XEvents, calling corresponding event handlers.
+  void ProcessPendingXEvents();
+
+ private:
+  typedef std::map<int, std::vector<XEventHandler*> > EventHandlersMap;
+
+  ~SharedXDisplay();
+
+  Atomic32 ref_count_;
+  Display* display_;
+
+  EventHandlersMap event_handlers_;
+
+  RTC_DISALLOW_COPY_AND_ASSIGN(SharedXDisplay);
+};
+
+}  // namespace webrtc
+
+#endif  // WEBRTC_MODULES_DESKTOP_CAPTURE_X11_SHARED_X_DISPLAY_H_