| Index: tools/metrics/histograms/histograms.xml
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| diff --git a/tools/metrics/histograms/histograms.xml b/tools/metrics/histograms/histograms.xml
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| index f01549cc4f4725adacd5e1d3b19e9c97220cec33..de5e3c28169c8ad8387afa91efd191253a3fc1e5 100644
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| --- a/tools/metrics/histograms/histograms.xml
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| +++ b/tools/metrics/histograms/histograms.xml
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| @@ -74751,6 +74751,9 @@ http://cs/file:chrome/histograms.xml - but prefer this file for new entries.
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|  
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|  <histogram name="WinJumplist.DetailedFolderMoveResults"
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|      enum="JumplistIconsDetailedFolderMoveCategory">
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| +  <obsolete>
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| +    Obsolete 12/13/2016 as we are no long recording this metric.
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| +  </obsolete>
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|    <owner>chengx@chromium.org</owner>
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|    <summary>
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|      This metric is recorded when folder JumpListIcons is moved (can be rename or
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| @@ -74763,6 +74766,21 @@ http://cs/file:chrome/histograms.xml - but prefer this file for new entries.
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|    </summary>
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|  </histogram>
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|  
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| +<histogram name="WinJumplist.DetailedFolderResults"
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| +    enum="JumplistIconsDetailedFolderOperationCategory">
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| +  <owner>chengx@chromium.org</owner>
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| +  <summary>
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| +    This metric is recorded when folders JumpListIcons and JumpListIconsOld get
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| +    updated. These two folders are updated when tabs are closed, mostly visited
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| +    URLs get updated, etc. These two folders are updated as follows 1)
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| +    JumpListIconsOld with its content get deleted; 2) if step 1 succeeds,
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| +    JumpListIcons is moved, 3) if any of the previous steps fails, JumpListIcons
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| +    is deleted, 4) A new JumpListIcons folder is created. The status of these 4
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| +    file operations are put together and recorded in this metric. The failure of
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| +    any of these file operations is suspected to be related to a known issue.
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| +  </summary>
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| +</histogram>
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| +
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|  <histogram name="WinJumplist.FolderMoveResults"
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|      enum="JumplistIconsFolderMoveCategory">
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|    <obsolete>
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| @@ -74777,11 +74795,15 @@ http://cs/file:chrome/histograms.xml - but prefer this file for new entries.
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|      folder move operation. Before the move operation, there is another step that
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|      JumpListIconsOld folder is deleted. The status of these steps are put
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|      together and recorded in this metric. The failure of any of these steps is
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| -    suspected to be related to a known issue.
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| +    suspected to be related to a known issue listed below.
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| +    https://bugs.chromium.org/p/chromium/issues/detail?id=179576
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|    </summary>
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|  </histogram>
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|  
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|  <histogram name="WinJumplist.FolderResults" enum="JumplisticonsfolderCategory">
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| +  <obsolete>
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| +    Obselete 12/13/2016, as we are now recording DetailedFolderResults.
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| +  </obsolete>
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|    <owner>chengx@chromium.org</owner>
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|    <summary>
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|      This metric is recorded when folders JumpListIcons and JumpListIconsOld get
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| @@ -91650,6 +91672,46 @@ http://cs/file:chrome/histograms.xml - but prefer this file for new entries.
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|               SourceDirRead Fail - DelFile Fail - DelSourceDir Fail"/>
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|  </enum>
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|  
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| +<enum name="JumplistIconsDetailedFolderOperationCategory" type="int">
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| +  <int value="0"
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| +      label="Del Dest Succeed - Mov Succeed - Del Src Succeed - Create Src
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| +             Succeed"/>
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| +  <int value="1"
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| +      label="Del Dest Fail - Mov Succeed - Del Src Succeed - Create Src
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| +             Succeed"/>
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| +  <int value="2"
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| +      label="Del Dest Succeed - Mov Fail - Del Src Succeed - Create Src
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| +             Succeed"/>
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| +  <int value="3"
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| +      label="Del Dest Fail - Mov Fail - Del Src Succeed - Create Src Succeed"/>
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| +  <int value="4"
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| +      label="Del Dest Succeed - Mov Succeed - Del Src Fail - Create Src
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| +             Succeed"/>
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| +  <int value="5"
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| +      label="Del Dest Fail - Mov Succeed - Del Src Fail - Create Src Succeed"/>
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| +  <int value="6"
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| +      label="Del Dest Succeed - Mov Fail - Del Src Fail - Create Src Succeed"/>
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| +  <int value="7"
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| +      label="Del Dest Fail - Mov Fail - Del Src Fail - Create Src Succeed"/>
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| +  <int value="8"
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| +      label="Del Dest Succeed - Mov Succeed - Del Src Succeed - Create Src
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| +             Fail"/>
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| +  <int value="9"
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| +      label="Del Dest Fail - Mov Succeed - Del Src Succeed - Create Src Fail"/>
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| +  <int value="10"
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| +      label="Del Dest Succeed - Mov Fail - Del Src Succeed - Create Src Fail"/>
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| +  <int value="11"
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| +      label="Del Dest Fail - Mov Fail - Del Src Succeed - Create Src Fail"/>
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| +  <int value="12"
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| +      label="Del Dest Succeed - Mov Succeed - Del Src Fail - Create Src Fail"/>
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| +  <int value="13"
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| +      label="Del Dest Fail - Mov Succeed - Del Src Fail - Create Src Fail"/>
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| +  <int value="14"
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| +      label="Del Dest Succeed - Mov Fail - Del Src Fail - Create Src Fail"/>
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| +  <int value="15"
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| +      label="Del Dest Fail - Mov Fail - Del Src Fail - Create Src Fail"/>
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| +</enum>
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| +
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|  <enum name="JumplisticonsfolderCategory" type="int">
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|    <int value="0" label="Del Succeed - Mov Succeed - Create Succeed"/>
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|    <int value="1" label="Del Fail - Mov Succeed - Create Succeed"/>
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| 
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