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}

examples/unityplugin/classreferenceholder.h

@@ -0,0 +1,37 @@
+/*
+ *  Copyright 2015 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.
+ */
+
+// This is a supplement of webrtc::jni::ClassReferenceHolder.
+// The purpose of this ClassReferenceHolder is to load the example
+// specific java class into JNI c++ side, so that our c++ code can
+// call those java functions.
+
+#ifndef WEBRTC_EXAMPLES_UNITYPLUGIN_CLASSREFERENCEHOLDER_H_
+#define WEBRTC_EXAMPLES_UNITYPLUGIN_CLASSREFERENCEHOLDER_H_
+
+#include <jni.h>
+#include <map>
+#include <string>
+#include <vector>
+
+namespace unity_plugin {
+
+// LoadGlobalClassReferenceHolder must be called in JNI_OnLoad.
+void LoadGlobalClassReferenceHolder();
+// FreeGlobalClassReferenceHolder must be called in JNI_UnLoad.
+void FreeGlobalClassReferenceHolder();
+
+// Returns a global reference guaranteed to be valid for the lifetime of the
+// process.
+jclass FindClass(JNIEnv* jni, const char* name);
+
+}  // namespace unity_plugin
+
+#endif  // WEBRTC_EXAMPLES_UNITYPLUGIN_CLASSREFERENCEHOLDER_H_