[DevTools] Migrate inspector-protocol/emulation tests to new harness

third_party/WebKit/LayoutTests/inspector-protocol/resources/inspector-protocol-test.js

Index: third_party/WebKit/LayoutTests/inspector-protocol/resources/inspector-protocol-test.js
diff --git a/third_party/WebKit/LayoutTests/inspector-protocol/resources/inspector-protocol-test.js b/third_party/WebKit/LayoutTests/inspector-protocol/resources/inspector-protocol-test.js
index 5530d828bbfbf4e0f8e5e6145d8e77b079f8100c..ca431062fb82e66fbdbae98a91461ff5e2801162 100644
--- a/third_party/WebKit/LayoutTests/inspector-protocol/resources/inspector-protocol-test.js
+++ b/third_party/WebKit/LayoutTests/inspector-protocol/resources/inspector-protocol-test.js
@@ -199,20 +199,7 @@ TestRunner.Page = class {
       this._testRunner.die(`Cannot navigate to ${url} with active session`, new Error());
 
     var session = await this.createSession();
-    session.protocol.Page.enable();
-    session.protocol.Page.navigate({url: url});
-
-    var callback;
-    var promise = new Promise(f => callback = f);
-    session.protocol.Page.onFrameNavigated(message => {
-      if (!message.params.frame.parentId)
-        callback();
-    });
-    await Promise.all([
-      promise,
-      session.protocol.Page.onceLoadEventFired()
-    ]);
-
+    await session._navigate(url);
     await session.disconnect();
   }
 
@@ -279,6 +266,26 @@ TestRunner.Session = class {
     }
   }
 
+  navigate(url) {
+    return this._navigate(this._testRunner.url(url));
+  }
+
+  async _navigate(url) {
+    this.protocol.Page.enable();
+    this.protocol.Page.navigate({url: url});
+
+    var callback;
+    var promise = new Promise(f => callback = f);
+    this.protocol.Page.onFrameNavigated(message => {
+      if (!message.params.frame.parentId)
+        callback();
+    });
+    await Promise.all([
+      promise,
+      this.protocol.Page.onceLoadEventFired()
+    ]);
+  }
+
   _dispatchMessage(message) {
     if (this._testRunner._dumpInspectorProtocolMessages)
       this._testRunner.log(`backend => frontend: ${JSON.stringify(message)}`);