Move talk/app/webrtc to webrtc/api

The previously disabled warnings that were inherited from
talk/build/common.gypi are now replaced by target-specific disabling
of only the failing warnings. Additional disabling was needed since the stricter
compilation warnings that applies to code in webrtc/.

License headers will be updated in a follow-up CL.

Other modifications:
* Updated the header guards.
* Sorted the includes using chromium/src/tools/sort-headers.py
  except for these files:
  talk/app/webrtc/peerconnectionendtoend_unittest.cc
  talk/app/webrtc/java/jni/androidmediadecoder_jni.cc
  talk/app/webrtc/java/jni/androidmediaencoder_jni.cc
  webrtc/media/devices/win32devicemanager.cc

The HAVE_SCTP define was added for the peerconnection_unittests target
in api_tests.gyp.

I also checked that none of
SRTP_RELATIVE_PATH
HAVE_SRTP
HAVE_WEBRTC_VIDEO
HAVE_WEBRTC_VOICE
were used by the talk/app/webrtc code.

For Chromium, the following changes will need to be applied to the roll CL that updates the
DEPS for WebRTC and libjingle:
https://codereview.chromium.org/1615433002

BUG=webrtc:5418
NOPRESUBMIT=True
R=deadbeef@webrtc.org, pthatcher@webrtc.org, tommi@webrtc.org

Review URL: https://codereview.webrtc.org/1610243002 .

Cr-Commit-Position: refs/heads/master@{#11545}
diff --git a/webrtc/api/proxy_unittest.cc b/webrtc/api/proxy_unittest.cc
new file mode 100644
index 0000000..8fa7363
--- /dev/null
+++ b/webrtc/api/proxy_unittest.cc
@@ -0,0 +1,170 @@
+/*
+ * libjingle
+ * Copyright 2013 Google Inc.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions are met:
+ *
+ *  1. Redistributions of source code must retain the above copyright notice,
+ *     this list of conditions and the following disclaimer.
+ *  2. Redistributions in binary form must reproduce the above copyright notice,
+ *     this list of conditions and the following disclaimer in the documentation
+ *     and/or other materials provided with the distribution.
+ *  3. The name of the author may not be used to endorse or promote products
+ *     derived from this software without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR IMPLIED
+ * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
+ * MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO
+ * EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+ * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
+ * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS;
+ * OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
+ * WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR
+ * OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF
+ * ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ */
+
+#include "webrtc/api/proxy.h"
+
+#include <string>
+
+#include "testing/base/public/gmock.h"
+#include "webrtc/base/gunit.h"
+#include "webrtc/base/refcount.h"
+#include "webrtc/base/scoped_ptr.h"
+#include "webrtc/base/thread.h"
+
+using ::testing::_;
+using ::testing::DoAll;
+using ::testing::Exactly;
+using ::testing::InvokeWithoutArgs;
+using ::testing::Return;
+
+namespace webrtc {
+
+// Interface used for testing here.
+class FakeInterface : public rtc::RefCountInterface {
+ public:
+  virtual void VoidMethod0() = 0;
+  virtual std::string Method0() = 0;
+  virtual std::string ConstMethod0() const = 0;
+  virtual std::string Method1(std::string s) = 0;
+  virtual std::string ConstMethod1(std::string s) const = 0;
+  virtual std::string Method2(std::string s1, std::string s2) = 0;
+
+ protected:
+  ~FakeInterface() {}
+};
+
+// Proxy for the test interface.
+BEGIN_PROXY_MAP(Fake)
+  PROXY_METHOD0(void, VoidMethod0)
+  PROXY_METHOD0(std::string, Method0)
+  PROXY_CONSTMETHOD0(std::string, ConstMethod0)
+  PROXY_METHOD1(std::string, Method1, std::string)
+  PROXY_CONSTMETHOD1(std::string, ConstMethod1, std::string)
+  PROXY_METHOD2(std::string, Method2, std::string, std::string)
+END_PROXY()
+
+// Implementation of the test interface.
+class Fake : public FakeInterface {
+ public:
+  static rtc::scoped_refptr<Fake> Create() {
+    return new rtc::RefCountedObject<Fake>();
+  }
+
+  MOCK_METHOD0(VoidMethod0, void());
+  MOCK_METHOD0(Method0, std::string());
+  MOCK_CONST_METHOD0(ConstMethod0, std::string());
+
+  MOCK_METHOD1(Method1, std::string(std::string));
+  MOCK_CONST_METHOD1(ConstMethod1, std::string(std::string));
+
+  MOCK_METHOD2(Method2, std::string(std::string, std::string));
+
+ protected:
+  Fake() {}
+  ~Fake() {}
+};
+
+class ProxyTest: public testing::Test {
+ public:
+  // Checks that the functions is called on the |signaling_thread_|.
+  void CheckThread() {
+    EXPECT_EQ(rtc::Thread::Current(), signaling_thread_.get());
+  }
+
+ protected:
+  virtual void SetUp() {
+    signaling_thread_.reset(new rtc::Thread());
+    ASSERT_TRUE(signaling_thread_->Start());
+    fake_ = Fake::Create();
+    fake_proxy_ = FakeProxy::Create(signaling_thread_.get(), fake_.get());
+  }
+
+ protected:
+  rtc::scoped_ptr<rtc::Thread> signaling_thread_;
+  rtc::scoped_refptr<FakeInterface> fake_proxy_;
+  rtc::scoped_refptr<Fake> fake_;
+};
+
+TEST_F(ProxyTest, VoidMethod0) {
+  EXPECT_CALL(*fake_, VoidMethod0())
+            .Times(Exactly(1))
+            .WillOnce(InvokeWithoutArgs(this, &ProxyTest::CheckThread));
+  fake_proxy_->VoidMethod0();
+}
+
+TEST_F(ProxyTest, Method0) {
+  EXPECT_CALL(*fake_, Method0())
+            .Times(Exactly(1))
+            .WillOnce(
+                DoAll(InvokeWithoutArgs(this, &ProxyTest::CheckThread),
+                      Return("Method0")));
+  EXPECT_EQ("Method0",
+            fake_proxy_->Method0());
+}
+
+TEST_F(ProxyTest, ConstMethod0) {
+  EXPECT_CALL(*fake_, ConstMethod0())
+            .Times(Exactly(1))
+            .WillOnce(
+                DoAll(InvokeWithoutArgs(this, &ProxyTest::CheckThread),
+                      Return("ConstMethod0")));
+  EXPECT_EQ("ConstMethod0",
+            fake_proxy_->ConstMethod0());
+}
+
+TEST_F(ProxyTest, Method1) {
+  const std::string arg1 = "arg1";
+  EXPECT_CALL(*fake_, Method1(arg1))
+            .Times(Exactly(1))
+            .WillOnce(
+                DoAll(InvokeWithoutArgs(this, &ProxyTest::CheckThread),
+                      Return("Method1")));
+  EXPECT_EQ("Method1", fake_proxy_->Method1(arg1));
+}
+
+TEST_F(ProxyTest, ConstMethod1) {
+  const std::string arg1 = "arg1";
+  EXPECT_CALL(*fake_, ConstMethod1(arg1))
+            .Times(Exactly(1))
+            .WillOnce(
+                DoAll(InvokeWithoutArgs(this, &ProxyTest::CheckThread),
+                      Return("ConstMethod1")));
+  EXPECT_EQ("ConstMethod1", fake_proxy_->ConstMethod1(arg1));
+}
+
+TEST_F(ProxyTest, Method2) {
+  const std::string arg1 = "arg1";
+  const std::string arg2 = "arg2";
+  EXPECT_CALL(*fake_, Method2(arg1, arg2))
+            .Times(Exactly(1))
+            .WillOnce(
+                DoAll(InvokeWithoutArgs(this, &ProxyTest::CheckThread),
+                      Return("Method2")));
+  EXPECT_EQ("Method2", fake_proxy_->Method2(arg1, arg2));
+}
+
+}  // namespace webrtc