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Side by Side Diff: components/html_viewer/stats_collection_controller.h

Issue 1677293002: Bye bye Mandoline (Closed) Base URL: https://chromium.googlesource.com/chromium/src.git@master
Patch Set: moar Created 4 years, 10 months ago
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1 // Copyright 2015 The Chromium Authors. All rights reserved.
2 // Use of this source code is governed by a BSD-style license that can be
3 // found in the LICENSE file.
4
5 #ifndef COMPONENTS_HTML_VIEWER_STATS_COLLECTION_CONTROLLER_H_
6 #define COMPONENTS_HTML_VIEWER_STATS_COLLECTION_CONTROLLER_H_
7
8 #include "base/macros.h"
9 #include "gin/wrappable.h"
10 #include "mojo/services/tracing/public/interfaces/tracing.mojom.h"
11
12 namespace blink {
13 class WebFrame;
14 }
15
16 namespace mojo {
17 class Shell;
18 }
19
20 namespace html_viewer {
21
22 // This class is exposed in JS as window.statsCollectionController and provides
23 // functionality to read out statistics from the browser.
24 // Its use must be enabled specifically via the
25 // --enable-stats-collection-bindings command line flag.
26 class StatsCollectionController
27 : public gin::Wrappable<StatsCollectionController> {
28 public:
29 static gin::WrapperInfo kWrapperInfo;
30
31 // Install the JS and return a mojo:tracing InterfacePtr for stats reporting.
32 // This bails and returns a null pointer without the stats command line flag.
33 static tracing::StartupPerformanceDataCollectorPtr Install(
34 blink::WebFrame* frame,
35 mojo::Shell* shell);
36
37 // Return a mojo:metrics InterfacePtr for stats reporting.
38 // This bails and returns a null pointer without the stats command line flag.
39 static tracing::StartupPerformanceDataCollectorPtr ConnectToDataCollector(
40 mojo::Shell* shell);
41
42 private:
43 explicit StatsCollectionController(
44 tracing::StartupPerformanceDataCollectorPtr collector);
45 ~StatsCollectionController() override;
46
47 // gin::WrappableBase
48 gin::ObjectTemplateBuilder GetObjectTemplateBuilder(
49 v8::Isolate* isolate) override;
50
51 // Retrieves a histogram and returns a JSON representation of it.
52 std::string GetHistogram(const std::string& histogram_name);
53
54 // Retrieves a browser histogram and returns a JSON representation of it.
55 std::string GetBrowserHistogram(const std::string& histogram_name);
56
57 tracing::StartupPerformanceDataCollectorPtr
58 startup_performance_data_collector_;
59
60 DISALLOW_COPY_AND_ASSIGN(StatsCollectionController);
61 };
62
63 } // namespace html_viewer
64
65 #endif // COMPONENTS_HTML_VIEWER_STATS_COLLECTION_CONTROLLER_H_
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