Collect UMA statistics on which chrome://flags lead to chrome restart on ChromeOS.

chrome/browser/about_flags_switches_histogram_ids.h

+// Copyright 2014 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.
+
+#ifndef CHROME_BROWSER_ABOUT_FLAGS_SWITCHES_HISTOGRAM_IDS_H_
+#define CHROME_BROWSER_ABOUT_FLAGS_SWITCHES_HISTOGRAM_IDS_H_
+
+namespace about_flags {
+
+/*
+  ************************************************************************
+  This is a mapping between switch name and UMA id. Indexes in this table
+  must never be modified. Plase add new value to the end of the table only!
+  ************************************************************************
+
+  If some entry should be deleted, prepend "DEPRECATED_" prefix to the enum
+  constant.
+
+  This table must be in sync with LoginCustomFlags in
+  tools/metrics/histogram.xml .
+
+  NOTE: This table is intentionally unsorted to force anyone to read this
+  comment before modifying the table.
+
+  NOTE: multi-line comments / * ... * / are not supported by the PRECOMMIT hook.

[Ilya Sherman, 2014/07/21 22:12:59]

nit: I'd omit this note, fwiw; let the presubmit speak for itself, if need be.

[Alexander Alekseev, 2014/07/22 14:25:06]

It's rather painful to convert presubmit warnings to "multi-line comments / *
... * / are not supported". I hope this comment would save several minutes to
someone. ;-)

+*/
+
+enum SwitchesUmaHistogramId {
+  UMA_HISTOGRAM_ID_UNKNOWN_FLAG,
+  UMA_HISTOGRAM_ID_BAD_FLAG_FORMAT,
+  UMA_HISTOGRAM_ID_RESERVED2, /* unused - reserved */
+  UMA_HISTOGRAM_ID_RESERVED3, /* unused - reserved */
+  UMA_HISTOGRAM_ID_RESERVED4, /* unused - reserved */
+  UMA_HISTOGRAM_ID_kDisableWebRtcHWEncoding,
+  UMA_HISTOGRAM_ID_kDisableMinimizeOnSecondLauncherItemClick,
+  UMA_HISTOGRAM_ID_kDisableInfobarForProtectedMediaIdentifier,
+  UMA_HISTOGRAM_ID_kDisableVirtualKeyboardOverscroll,
+  UMA_HISTOGRAM_ID_kEnablePinchVirtualViewport,
+  UMA_HISTOGRAM_ID_kPrefetchSearchResults,
+  UMA_HISTOGRAM_ID_kEnableExperimentalAppList,
+  UMA_HISTOGRAM_ID_kEnableDevToolsExperiments,
+  UMA_HISTOGRAM_ID_kEnableCenteredAppList,
+  UMA_HISTOGRAM_ID_kEnableAcceleratedOverflowScroll,
+  UMA_HISTOGRAM_ID_kEnableTcpFastOpen,
+  UMA_HISTOGRAM_ID_kEnableZeroSuggestPersonalized,
+  UMA_HISTOGRAM_ID_kEnableExperimentalWebPlatformFeatures,
+  UMA_HISTOGRAM_ID_kUseSimpleCacheBackend,
+  UMA_HISTOGRAM_ID_kDisableSearchButtonInOmnibox,
+  UMA_HISTOGRAM_ID_kFileManagerEnableNewAudioPlayer,
+  UMA_HISTOGRAM_ID_kDisablePrefixedEncryptedMedia,
+  UMA_HISTOGRAM_ID_kDisableOriginChip,
+  UMA_HISTOGRAM_ID_kDisableTouchAdjustment,
+  UMA_HISTOGRAM_ID_kDisableOfflineAutoReload,
+  UMA_HISTOGRAM_ID_kEnableCompositingForFixedPosition,
+  UMA_HISTOGRAM_ID_kEnableNaCl,
+  UMA_HISTOGRAM_ID_kDisableSamlSignin,
+  UMA_HISTOGRAM_ID_kDisableViewsRectBasedTargeting,
+  UMA_HISTOGRAM_ID_kEnableLinkableEphemeralApps,
+  UMA_HISTOGRAM_ID_kEnableZeroCopy,
+  UMA_HISTOGRAM_ID_kEnableSessionCrashedBubble,
+  UMA_HISTOGRAM_ID_kEnableSpellingAutoCorrect,
+  UMA_HISTOGRAM_ID_kDisableSuggestionsService,
+  UMA_HISTOGRAM_ID_kDisableAppInfo,
+  UMA_HISTOGRAM_ID_kAllowInsecureWebSocketFromHttpsOrigin,
+  UMA_HISTOGRAM_ID_kEnableInputView,
+  UMA_HISTOGRAM_ID_kEnableWebMIDI,
+  UMA_HISTOGRAM_ID_kDisableVoiceSearch,
+  UMA_HISTOGRAM_ID_kDisableOfflineLoadStaleCache,
+  UMA_HISTOGRAM_ID_kManualEnhancedBookmarks,
+  UMA_HISTOGRAM_ID_kNumRasterThreads,
+  UMA_HISTOGRAM_ID_kDisableCast,
+  UMA_HISTOGRAM_ID_kEnableInstantSearchClicks,
+  UMA_HISTOGRAM_ID_kEnableZeroSuggestEtherNoSerp,
+  UMA_HISTOGRAM_ID_kEnableOverlayScrollbar,
+  UMA_HISTOGRAM_ID_kEnableSpdy4,
+  UMA_HISTOGRAM_ID_kDisableBootAnimation,
+  UMA_HISTOGRAM_ID_kDisablePasswordGeneration,
+  UMA_HISTOGRAM_ID_kDisableSoftwareRasterizer,
+  UMA_HISTOGRAM_ID_kEnableAVFoundation,
+  UMA_HISTOGRAM_ID_kDisableDataReductionProxyDev,
+  UMA_HISTOGRAM_ID_kDisableNewProfileManagement,
+  UMA_HISTOGRAM_ID_kMediaDrmEnableNonCompositing,
+  UMA_HISTOGRAM_ID_kDisableTextInputFocusManager,
+  UMA_HISTOGRAM_ID_kEnableSmoothScrolling,
+  UMA_HISTOGRAM_ID_kEnablePasswordGeneration,
+  UMA_HISTOGRAM_ID_kDisableDeviceDiscovery,
+  UMA_HISTOGRAM_ID_kScrollEndEffect,
+  UMA_HISTOGRAM_ID_kEnableDelegatedRenderer,
+  UMA_HISTOGRAM_ID_kAshEnableTouchViewTesting,
+  UMA_HISTOGRAM_ID_kTouchEvents,
+  UMA_HISTOGRAM_ID_kDisableNewNTP,
+  UMA_HISTOGRAM_ID_kDisablePermissionsBubbles,
+  UMA_HISTOGRAM_ID_kEnableNetworkPortalNotification,
+  UMA_HISTOGRAM_ID_kDisableMediaSource,
+  UMA_HISTOGRAM_ID_kEnableEncryptedMedia,
+  UMA_HISTOGRAM_ID_kEnableAppsFileAssociations,
+  UMA_HISTOGRAM_ID_kEnableSearchButtonInOmniboxForStr,
+  UMA_HISTOGRAM_ID_kDisableSyncAppList,
+  UMA_HISTOGRAM_ID_kFileManagerEnableNewGallery,
+  UMA_HISTOGRAM_ID_kEnableFastUnload,
+  UMA_HISTOGRAM_ID_kDisableFastTextAutosizing,
+  UMA_HISTOGRAM_ID_kTabCaptureUpscaleQuality,
+  UMA_HISTOGRAM_ID_kDisableThreadedCompositing,
+  UMA_HISTOGRAM_ID_kEnableAcceleratedFixedRootBackground,
+  UMA_HISTOGRAM_ID_kEnableLCDText,
+  UMA_HISTOGRAM_ID_kNaClDebugMask,
+  UMA_HISTOGRAM_ID_kDisableCompositingForTransition,
+  UMA_HISTOGRAM_ID_kEnableEmbeddedSearchAPI,
+  UMA_HISTOGRAM_ID_kEnableSettingsWindow,
+  UMA_HISTOGRAM_ID_kForceDeviceScaleFactor,
+  UMA_HISTOGRAM_ID_kDisablePasswordManagerReauthentication,
+  UMA_HISTOGRAM_ID_kDisablePinchVirtualViewport,
+  UMA_HISTOGRAM_ID_kDisableExperimentalWebGL,
+  UMA_HISTOGRAM_ID_kSavePageAsMHTML,
+  UMA_HISTOGRAM_ID_kDisableZeroSuggest,
+  UMA_HISTOGRAM_ID_kShowCompositedLayerBorders,
+  UMA_HISTOGRAM_ID_kEnableZeroSuggestMostVisited,
+  UMA_HISTOGRAM_ID_kEnableAnswersInSuggest,
+  UMA_HISTOGRAM_ID_kMalwareInterstitialVersionV3,
+  UMA_HISTOGRAM_ID_kEnableVirtualKeyboard,
+  UMA_HISTOGRAM_ID_kDisableQuic,
+  UMA_HISTOGRAM_ID_kDefaultTileWidth,
+  UMA_HISTOGRAM_ID_kEnableAutomaticPasswordSaving,
+  UMA_HISTOGRAM_ID_kEnableSearchButtonInOmniboxAlways,
+  UMA_HISTOGRAM_ID_kDisableInputView,
+  UMA_HISTOGRAM_ID_kEnableOneCopy,
+  UMA_HISTOGRAM_ID_kOverscrollHistoryNavigation,
+  UMA_HISTOGRAM_ID_kEnableQuicHttps,
+  UMA_HISTOGRAM_ID_kJavaScriptFlags,
+  UMA_HISTOGRAM_ID_kEnableNaClDebug,
+  UMA_HISTOGRAM_ID_kEnableViewportMeta,
+  UMA_HISTOGRAM_ID_kEnableExperimentalInputViewFeatures,
+  UMA_HISTOGRAM_ID_kDisableGpuRasterization,
+  UMA_HISTOGRAM_ID_kEnablePrintPreviewRegisterPromos,
+  UMA_HISTOGRAM_ID_kEnableSimplifiedFullscreen,
+  UMA_HISTOGRAM_ID_kEnableAccessibilityTabSwitcher,
+  UMA_HISTOGRAM_ID_kEnableQuic,
+  UMA_HISTOGRAM_ID_kEnableOriginChipOnSrp,
+  UMA_HISTOGRAM_ID_kFastUserSwitching,
+  UMA_HISTOGRAM_ID_kEnableTouchEditing,
+  UMA_HISTOGRAM_ID_kWalletServiceUseSandbox,
+  UMA_HISTOGRAM_ID_kEnableCarrierSwitching,
+  UMA_HISTOGRAM_ID_kDisableContextualSearch,
+  UMA_HISTOGRAM_ID_kEnableZeroSuggestEtherSerp,
+  UMA_HISTOGRAM_ID_kEnableCloudDevices,
+  UMA_HISTOGRAM_ID_kDisableQuicHttps,
+  UMA_HISTOGRAM_ID_kEnableTouchDragDrop,
+  UMA_HISTOGRAM_ID_kEnablePermissionsBubbles,
+  UMA_HISTOGRAM_ID_kEnableFirstRunUITransitions,
+  UMA_HISTOGRAM_ID_kDisableDeviceDiscoveryNotifications,
+  UMA_HISTOGRAM_ID_kEnableThreadedCompositing,
+  UMA_HISTOGRAM_ID_kEnableEasyUnlock,
+  UMA_HISTOGRAM_ID_kEnableOriginChipAlways,
+  UMA_HISTOGRAM_ID_kEnablePinch,
+  UMA_HISTOGRAM_ID_kEnableBleedingEdgeRenderingFastPaths,
+  UMA_HISTOGRAM_ID_kDisableLCDText,
+  UMA_HISTOGRAM_ID_kEnableStreamlinedHostedApps,
+  UMA_HISTOGRAM_ID_kDisableWebRTC,
+  UMA_HISTOGRAM_ID_kEnableSavePasswordBubble,
+  UMA_HISTOGRAM_ID_kEnableAppsShowOnFirstPaint,
+  UMA_HISTOGRAM_ID_kEnableNewNTP,
+  UMA_HISTOGRAM_ID_kEnableTextInputFocusManager,
+  UMA_HISTOGRAM_ID_kEnableServiceWorkerSync,
+  UMA_HISTOGRAM_ID_kEnableHarfBuzzRenderText,
+  UMA_HISTOGRAM_ID_kEnableDownloadResumption,
+  UMA_HISTOGRAM_ID_kEnableNewProfileManagement,
+  UMA_HISTOGRAM_ID_kDisableTouchEditing,
+  UMA_HISTOGRAM_ID_kGoogleProfileInfo,
+  UMA_HISTOGRAM_ID_kEnableImplSidePainting,
+  UMA_HISTOGRAM_ID_kEnableDistanceFieldText,
+  UMA_HISTOGRAM_ID_kEnableDeferredImageDecoding,
+  UMA_HISTOGRAM_ID_kManualEnhancedBookmarksOptout,
+  UMA_HISTOGRAM_ID_kEnableSearchButtonInOmniboxForStrOrIip,
+  UMA_HISTOGRAM_ID_kEnableOfflineAutoReload,
+  UMA_HISTOGRAM_ID_kEnableExperimentalCanvasFeatures,
+  UMA_HISTOGRAM_ID_kEnableAppInstallAlerts,
+  UMA_HISTOGRAM_ID_kEnableCloudPrintXps,
+  UMA_HISTOGRAM_ID_kMaxTilesForInterestArea,
+  UMA_HISTOGRAM_ID_kEnableAppList,
+  UMA_HISTOGRAM_ID_kDisableAcceleratedVideoDecode,
+  UMA_HISTOGRAM_ID_kOutOfProcessPdf,
+  UMA_HISTOGRAM_ID_kDisableSessionCrashedBubble,
+  UMA_HISTOGRAM_ID_kEnableSwipeSelection,
+  UMA_HISTOGRAM_ID_kDisableCompositingForFixedPosition,
+  UMA_HISTOGRAM_ID_kEnableWebBasedSignin,
+  UMA_HISTOGRAM_ID_kSSLInterstitialVersionV2Gray,
+  UMA_HISTOGRAM_ID_kEnableSyncAppList,
+  UMA_HISTOGRAM_ID_kDisableCompositorTouchHitTesting,
+  UMA_HISTOGRAM_ID_kDisableAcceleratedFixedRootBackground,
+  UMA_HISTOGRAM_ID_kEnhancedBookmarksExperiment,
+  UMA_HISTOGRAM_ID_kDisablePnacl,
+  UMA_HISTOGRAM_ID_kExtensionContentVerification,
+  UMA_HISTOGRAM_ID_kDisableTouchDragDrop,
+  UMA_HISTOGRAM_ID_kDefaultTileHeight,
+  UMA_HISTOGRAM_ID_kDisableSyncSyncedNotifications,
+  UMA_HISTOGRAM_ID_kNewAvatarMenu,
+  UMA_HISTOGRAM_ID_kAllowNaClSocketAPI,
+  UMA_HISTOGRAM_ID_kEnableExperimentalExtensionApis,
+  UMA_HISTOGRAM_ID_kEnableAppWindowControls,
+  UMA_HISTOGRAM_ID_kSilentDebuggerExtensionAPI,
+  UMA_HISTOGRAM_ID_kEnableSuggestionsService,
+  UMA_HISTOGRAM_ID_kEnableContextualSearch,
+  UMA_HISTOGRAM_ID_kEnableFastTextAutosizing,
+  UMA_HISTOGRAM_ID_kAshTouchHud,
+  UMA_HISTOGRAM_ID_kDisableAcceleratedOverflowScroll,
+  UMA_HISTOGRAM_ID_kDisableAsyncDns,
+  UMA_HISTOGRAM_ID_kDisableWebAudio,
+  UMA_HISTOGRAM_ID_kDisableDelegatedRenderer,
+  UMA_HISTOGRAM_ID_kDisableSavePasswordBubble,
+  UMA_HISTOGRAM_ID_kEnableOfflineLoadStaleCache,
+  UMA_HISTOGRAM_ID_kDisableDisplayColorCalibration,
+  UMA_HISTOGRAM_ID_kDebugPackedApps,
+  UMA_HISTOGRAM_ID_kEnableGpuRasterization,
+  UMA_HISTOGRAM_ID_kDisableImplSidePainting,
+  UMA_HISTOGRAM_ID_kDisableDistanceFieldText,
+  UMA_HISTOGRAM_ID_kPerformanceMonitorGathering,
+  UMA_HISTOGRAM_ID_kDisablePinch,
+  UMA_HISTOGRAM_ID_kSyncfsEnableDirectoryOperation,
+  UMA_HISTOGRAM_ID_kDisableNTPOtherSessionsMenu,
+  UMA_HISTOGRAM_ID_kEnableSpellingFeedbackFieldTrial,
+  UMA_HISTOGRAM_ID_kSSLInterstitialVersionV1,
+  UMA_HISTOGRAM_ID_kDisableGestureRequirementForMediaPlayback,
+  UMA_HISTOGRAM_ID_kTouchScrollingMode,
+  UMA_HISTOGRAM_ID_kEnableTouchpadThreeFingerClick,
+  UMA_HISTOGRAM_ID_kDisableQuickofficeComponentApp,
+  UMA_HISTOGRAM_ID_kEnableCompositingForTransition,
+  UMA_HISTOGRAM_ID_kDisableAccountConsistency,
+  UMA_HISTOGRAM_ID_kEnableRequestTabletSite,
+  UMA_HISTOGRAM_ID_kTabCaptureDownscaleQuality,
+  UMA_HISTOGRAM_ID_kEnableServiceWorker,
+  UMA_HISTOGRAM_ID_kAshDebugShortcuts,
+  UMA_HISTOGRAM_ID_kEnableSyncSyncedNotifications,
+  UMA_HISTOGRAM_ID_kIgnoreGpuBlacklist,
+  UMA_HISTOGRAM_ID_kSSLInterstitialVersionV2Colorful,
+  UMA_HISTOGRAM_ID_kDisableIgnoreAutocompleteOff,
+  UMA_HISTOGRAM_ID_kDisableAccelerated2dCanvas,
+  UMA_HISTOGRAM_ID_kEnableGestureTapHighlight,
+  UMA_HISTOGRAM_ID_kResetAppListInstallState,
+  UMA_HISTOGRAM_ID_kEnableScrollPrediction,
+  UMA_HISTOGRAM_ID_kEnableEphemeralApps,
+  UMA_HISTOGRAM_ID_kEnableWebGLDraftExtensions,
+  UMA_HISTOGRAM_ID_kDisableNetworkPortalNotification,
+  UMA_HISTOGRAM_ID_kEnableDeviceDiscoveryNotifications,
+  UMA_HISTOGRAM_ID_kDisableLayerSquashing,
+  UMA_HISTOGRAM_ID_kDisableGestureTapHighlight,
+  UMA_HISTOGRAM_ID_kEnableOfflineAutoReloadVisibleOnly,
+  UMA_HISTOGRAM_ID_kEnableDataReductionProxyDev,
+  UMA_HISTOGRAM_ID_kEnableTranslateNewUX,
+  UMA_HISTOGRAM_ID_kNoPings,
+  UMA_HISTOGRAM_ID_kEnableScriptsRequireAction,
+  UMA_HISTOGRAM_ID_kDisableWebRtcHWDecoding,
+  UMA_HISTOGRAM_ID_kEnableVirtualKeyboardOverscroll,
+  UMA_HISTOGRAM_ID_kDisableDirectWrite,
+  UMA_HISTOGRAM_ID_kExtensionsOnChromeURLs,
+  UMA_HISTOGRAM_ID_kMalwareInterstitialVersionV2,
+  UMA_HISTOGRAM_ID_kEnableAccountConsistency,
+  UMA_HISTOGRAM_ID_kDisableOfflineAutoReloadVisibleOnly,
+  UMA_HISTOGRAM_ID_kDisableSettingsWindow,
+  UMA_HISTOGRAM_ID_kDisableEmbeddedSharedWorker,
+  UMA_HISTOGRAM_ID_kShowAutofillTypePredictions,
+  UMA_HISTOGRAM_ID_kEnableAsyncDns,
+  UMA_HISTOGRAM_ID_kEnableProminentURLAppFlow,
+  UMA_HISTOGRAM_ID_kEnableHighDpiCompositingForFixedPosition,
+  UMA_HISTOGRAM_ID_kForceGpuRasterization,
+  UMA_HISTOGRAM_ID_kDisableDeviceEnumeration,
+  UMA_HISTOGRAM_ID_kShowFPSCounter,
+  UMA_HISTOGRAM_ID_kAppsKeepChromeAlive,
+  UMA_HISTOGRAM_ID_kEnableFileManagerMTP,
+  UMA_HISTOGRAM_ID_kEnablePanels,
+  UMA_HISTOGRAM_ID_kDisableOverlayScrollbar,
+  UMA_HISTOGRAM_ID_kDisableZeroCopy,
+  //
+  //  Do not forget to read comment on the top of the enum before adding values!
+  //
+};
+
+}  // namespace about_flags
+
+#endif  // CHROME_BROWSER_ABOUT_FLAGS_SWITCHES_HISTOGRAM_IDS_H_