The return value of ClosePlatformFile() was reversed in r59041. Most...

The return value of ClosePlatformFile() was reversed in r59041. Most
calls to ClosePlatformFile() ignore the return value, but there are
two calls that do use it:

1. webkit/glue/webfileutilities_impl.cc, closeFile() method: i talked
to jianli who changed that method most recently, and he said he
prefers the handle to be reset to base::kInvalidPlatformFileValue if
ClosePlatformFile() succeeded, so no change is needed to that code.

2. webkit/database/database_tracker.cc, CloseIncognitoFileHandle():
this code needs to be updated.

TEST=WebSQLDBs don't crash in incognito mode.
BUG=56237
Committed: http://src.chromium.org/viewvc/chrome?view=rev&revision=60685

[michaeln, 2010-09-24 23:13:32]

LGTM