IndexedDB: Reusing leveldb logs when opening database

tools/metrics/histograms/histograms.xml

Index: tools/metrics/histograms/histograms.xml
diff --git a/tools/metrics/histograms/histograms.xml b/tools/metrics/histograms/histograms.xml
index 8c13e20bf0f250d34bd09788c453634f1caa7a5c..4ed479a6b92cfb2c57dad285f48bd017db0862b5 100644
--- a/tools/metrics/histograms/histograms.xml
+++ b/tools/metrics/histograms/histograms.xml
@@ -49233,6 +49233,7 @@ Therefore, the affected-histogram name has to have at least one dot in it.
   <int value="18" label="NewLogger"/>
   <int value="19" label="SyncParent"/>
   <int value="20" label="GetChildren"/>
+  <int value="21" label="NewAppendableFile"/>
 </enum>
 
 <enum name="LevelDBPrefStoreErrorCodes" type="int">
@@ -58878,6 +58879,7 @@ To add a new entry, add it with any value and run test to compute valid value.
   <suffix name="GetChildren" label="ChromiumEnv::GetChildren"/>
   <suffix name="GetFileSize" label="ChromiumEnv::GetFileSize"/>
   <suffix name="LockFile" label="ChromiumEnv::LockFile"/>
+  <suffix name="NewAppendableFile" label="ChromiumEnv::NewAppendableFile"/>

[cmumford, 2014/12/15 18:08:36]

Note: I put NewAppendableFile in the IndexedDBLevelDBPFEMethods section, but
NewWritableFile is in IndexedDBLevelDBErrnoMethods. I believe that
NewWritableFile is n the wrong section. I don't believe we should change that.

[jsbell, 2014/12/15 18:37:46]

Now that base::File etc is used everywhere, does the Errno stuff get used at
all?

[cmumford, 2014/12/15 18:40:55]

Nope.

   <suffix name="NewRandomAccessFile" label="ChromiumEnv::NewRandomAccessFile"/>
   <suffix name="RandomAccessFileRead" label="ChromiumRandomAccessFile::Read"/>
   <suffix name="RenameFile" label="ChromiumEnv::RenameFile"/>