Add searching features to new TraceEventVector class for tests.

chrome/test/gpu/gpu_feature_browsertest.cc

 // Copyright (c) 2011 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #include "base/command_line.h"
 #include "base/file_util.h"
 #include "base/memory/scoped_ptr.h"
 #include "base/path_service.h"
 #include "base/test/trace_event_analyzer.h"
 #include "base/version.h"
@@ skipping 62 matching lines @@
         browser(), net::FilePathToFileURL(test_path), NEW_FOREGROUND_TAB,
         ui_test_utils::BROWSER_TEST_NONE);
     // Wait for message indicating the test has finished running.
     ASSERT_TRUE(message_queue.WaitForMessage(NULL));
 
     std::string json_events;
     ASSERT_TRUE(tracing::EndTracing(&json_events));
 
     scoped_ptr<TraceAnalyzer> analyzer(TraceAnalyzer::Create(json_events));
     analyzer->AssociateBeginEndEvents();
-    TraceAnalyzer::TraceEventVector events;
+    TraceEventVector events;
 
     size_t num_gpu_processes = (expectations & EXPECT_GPU_PROCESS) ? 1 : 0;
     analyzer->FindEvents(Query::MatchBeginName("OnGraphicsInfoCollected"),
                          &events);
     EXPECT_EQ(num_gpu_processes, events.size());
 
     // Check for context creation if expected:
     if (expectations & EXPECT_GPU_CONTEXTS) {
       analyzer->FindEvents(
           Query(EVENT_NAME) == Query::String("TryCreateGLContext"),
@@ skipping 127 matching lines @@
   EXPECT_EQ(
       flags.flags(),
       static_cast<uint32>(GpuFeatureFlags::kGpuFeatureAccelerated2dCanvas));
 
   const FilePath url(FILE_PATH_LITERAL("feature_canvas2d.html"));
   RunTest(url, EXPECT_NO_GPU_PROCESS);
 }
 
 }  // namespace anonymous