Regenerate mock peer connection to add missing mock methods.

Generated using gmock_gen.py with some editing.

This mock doesn't seem to be used by unittest in webrtc, but we need to use it in downstream unittests.

Bug: None
Change-Id: Ia7904ffdd22f3d16fe5fd515fa68833817b44481
Reviewed-on: https://webrtc-review.googlesource.com/85780
Commit-Queue: Tommi <tommi@webrtc.org>
Reviewed-by: Tommi <tommi@webrtc.org>
Cr-Commit-Position: refs/heads/master@{#23900}
diff --git a/api/BUILD.gn b/api/BUILD.gn
index f73c80d..4357947 100644
--- a/api/BUILD.gn
+++ b/api/BUILD.gn
@@ -414,6 +414,18 @@
     ]
   }
 
+  rtc_source_set("mock_peerconnectioninterface") {
+    testonly = true
+    sources = [
+      "test/mock_peerconnectioninterface.h",
+    ]
+
+    deps = [
+      ":libjingle_peerconnection_api",
+      "../test:test_support",
+    ]
+  }
+
   rtc_source_set("mock_rtp") {
     testonly = true
     sources = [