A collector for postmortem reports

PostmortemReportCollector handles the collection of stability reports,
their packaging to minidump format and registration to the Crashpad
database for reporting.

BUG=620813

Review-Url: https://codereview.chromium.org/2339193003
Cr-Commit-Position: refs/heads/master@{#419593}


CrOS-Libchrome-Original-Commit: 49e10c6d112f14337814ed9c844031987925fc7a
diff --git a/base/debug/activity_analyzer.h b/base/debug/activity_analyzer.h
index 5a080b0..14244b7 100644
--- a/base/debug/activity_analyzer.h
+++ b/base/debug/activity_analyzer.h
@@ -114,9 +114,9 @@
       const FilePath& file_path);
 #endif  // !defined(OS_NACL)
 
-  // Iterates over all known analyzers or returns null if there are no more.
-  // Ownership stays with the global analyzer object and all existing analyzer
-  // pointers are invalidated when GetFirstAnalyzer() is called.
+  // Iterates over all known valid analyzers or returns null if there are no
+  // more. Ownership stays with the global analyzer object and all existing
+  // analyzer pointers are invalidated when GetFirstAnalyzer() is called.
   ThreadActivityAnalyzer* GetFirstAnalyzer();
   ThreadActivityAnalyzer* GetNextAnalyzer();