Move all the examples from the talk directory into the webrtc examples directory.

Significant changes:

- move the libjingle_examples.gyp file into webrtc directory.
- rename talk/examples/android to webrtc/examples/androidapp to avoid name conflicts.
- update paths in talk/libjingle_tests.gyp to point to webrtc directory for Objective-C test.

BUG=
R=pthatcher@webrtc.org, tkchin@webrtc.org

Review URL: https://codereview.webrtc.org/1235563006 .

Cr-Commit-Position: refs/heads/master@{#9681}

webrtc/examples/peerconnection/client/linux/main_wnd.h

@@ -0,0 +1,120 @@
+/*
+ *  Copyright 2012 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 PEERCONNECTION_SAMPLES_CLIENT_LINUX_MAIN_WND_H_
+#define PEERCONNECTION_SAMPLES_CLIENT_LINUX_MAIN_WND_H_
+
+#include "webrtc/examples/peerconnection/client/main_wnd.h"
+#include "webrtc/examples/peerconnection/client/peer_connection_client.h"
+
+// Forward declarations.
+typedef struct _GtkWidget GtkWidget;
+typedef union _GdkEvent GdkEvent;
+typedef struct _GdkEventKey GdkEventKey;
+typedef struct _GtkTreeView GtkTreeView;
+typedef struct _GtkTreePath GtkTreePath;
+typedef struct _GtkTreeViewColumn GtkTreeViewColumn;
+
+// Implements the main UI of the peer connection client.
+// This is functionally equivalent to the MainWnd class in the Windows
+// implementation.
+class GtkMainWnd : public MainWindow {
+ public:
+  GtkMainWnd(const char* server, int port, bool autoconnect, bool autocall);
+  ~GtkMainWnd();
+
+  virtual void RegisterObserver(MainWndCallback* callback);
+  virtual bool IsWindow();
+  virtual void SwitchToConnectUI();
+  virtual void SwitchToPeerList(const Peers& peers);
+  virtual void SwitchToStreamingUI();
+  virtual void MessageBox(const char* caption, const char* text,
+                          bool is_error);
+  virtual MainWindow::UI current_ui();
+  virtual void StartLocalRenderer(webrtc::VideoTrackInterface* local_video);
+  virtual void StopLocalRenderer();
+  virtual void StartRemoteRenderer(webrtc::VideoTrackInterface* remote_video);
+  virtual void StopRemoteRenderer();
+
+  virtual void QueueUIThreadCallback(int msg_id, void* data);
+
+  // Creates and shows the main window with the |Connect UI| enabled.
+  bool Create();
+
+  // Destroys the window.  When the window is destroyed, it ends the
+  // main message loop.
+  bool Destroy();
+
+  // Callback for when the main window is destroyed.
+  void OnDestroyed(GtkWidget* widget, GdkEvent* event);
+
+  // Callback for when the user clicks the "Connect" button.
+  void OnClicked(GtkWidget* widget);
+
+  // Callback for keystrokes.  Used to capture Esc and Return.
+  void OnKeyPress(GtkWidget* widget, GdkEventKey* key);
+
+  // Callback when the user double clicks a peer in order to initiate a
+  // connection.
+  void OnRowActivated(GtkTreeView* tree_view, GtkTreePath* path,
+                      GtkTreeViewColumn* column);
+
+  void OnRedraw();
+
+ protected:
+  class VideoRenderer : public webrtc::VideoRendererInterface {
+   public:
+    VideoRenderer(GtkMainWnd* main_wnd,
+                  webrtc::VideoTrackInterface* track_to_render);
+    virtual ~VideoRenderer();
+
+    // VideoRendererInterface implementation
+    virtual void SetSize(int width, int height);
+    virtual void RenderFrame(const cricket::VideoFrame* frame);
+
+    const uint8* image() const {
+      return image_.get();
+    }
+
+    int width() const {
+      return width_;
+    }
+
+    int height() const {
+      return height_;
+    }
+
+   protected:
+    rtc::scoped_ptr<uint8[]> image_;
+    int width_;
+    int height_;
+    GtkMainWnd* main_wnd_;
+    rtc::scoped_refptr<webrtc::VideoTrackInterface> rendered_track_;
+  };
+
+ protected:
+  GtkWidget* window_;  // Our main window.
+  GtkWidget* draw_area_;  // The drawing surface for rendering video streams.
+  GtkWidget* vbox_;  // Container for the Connect UI.
+  GtkWidget* server_edit_;
+  GtkWidget* port_edit_;
+  GtkWidget* peer_list_;  // The list of peers.
+  MainWndCallback* callback_;
+  std::string server_;
+  std::string port_;
+  bool autoconnect_;
+  bool autocall_;
+  rtc::scoped_ptr<VideoRenderer> local_renderer_;
+  rtc::scoped_ptr<VideoRenderer> remote_renderer_;
+  rtc::scoped_ptr<uint8> draw_buffer_;
+  int draw_buffer_size_;
+};
+
+#endif  // PEERCONNECTION_SAMPLES_CLIENT_LINUX_MAIN_WND_H_