[inspector] added missing test for console methods

- and removed ":" from the output of console.count without argument.

BUG=none
R=luoe@chromium.org,alph@chromium.org

Review-Url: https://codereview.chromium.org/2674583002
Cr-Commit-Position: refs/heads/master@{#42903}

src/inspector/v8-console.cc

@@ -366,8 +366,10 @@ void V8Console::countCallback(const v8::FunctionCallbackInfo<v8::Value>& info) {
   if (!helper.privateMap("V8Console#countMap").ToLocal(&countMap)) return;
   int32_t count = helper.getIntFromMap(countMap, identifier, 0) + 1;
   helper.setIntOnMap(countMap, identifier, count);
-  helper.reportCallWithArgument(ConsoleAPIType::kCount,
-                                title + ": " + String16::fromInteger(count));
+  String16 countString = String16::fromInteger(count);
+  helper.reportCallWithArgument(
+      ConsoleAPIType::kCount,
+      title.isEmpty() ? countString : (title + ": " + countString));
 }
 
 void V8Console::assertCallback(

test/inspector/runtime/console-methods.js

+// Copyright 2017 the V8 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.
+
+print('Checks console methods');
+
+InspectorTest.addScript(`
+function testFunction() {
+  console.debug('debug');
+  console.error('error');
+  console.info('info');
+  console.log('log');
+  console.warn('warn');
+  console.dir('dir');
+  console.dirxml('dirxml');
+  console.table([[1,2],[3,4]]);
+  console.trace('trace');
+  console.trace();
+  console.group();
+  console.groupEnd();
+  console.groupCollapsed();
+  console.clear('clear');
+  console.clear();
+  console.count('count');
+  function foo() {
+    console.count();
+  }
+  foo();
+  foo();
+}
+//# sourceURL=test.js`, 7, 26);
+
+Protocol.Runtime.onConsoleAPICalled(InspectorTest.logMessage);
+Protocol.Runtime.enable();
+Protocol.Runtime.evaluate({ expression: 'testFunction()' })
+  .then(InspectorTest.completeTest);