Adjust some comments in crash_logging.h.

base/debug/crash_logging.h

Index: base/debug/crash_logging.h
diff --git a/base/debug/crash_logging.h b/base/debug/crash_logging.h
index 7a6bbcd54051e484f82f74385a8d1080c358c80e..97bac754a4b626985fe26935d37de8008fb7f7d7 100644
--- a/base/debug/crash_logging.h
+++ b/base/debug/crash_logging.h
@@ -25,7 +25,7 @@ namespace debug {
 
 class StackTrace;
 
-// Set or clear a specific key-value pair from the crash metadata. Keys and
+// Sets or clears a specific key-value pair from the crash metadata. Keys and
 // values are terminated at the null byte.
 BASE_EXPORT void SetCrashKeyValue(const base::StringPiece& key,
                                   const base::StringPiece& value);
@@ -75,11 +75,11 @@ struct BASE_EXPORT CrashKey {
 BASE_EXPORT size_t InitCrashKeys(const CrashKey* const keys, size_t count,
                                  size_t chunk_max_length);
 
-// Returns the correspnding crash key object or NULL for a given key.
+// Returns the corresponding crash key object or NULL for a given key.
 BASE_EXPORT const CrashKey* LookupCrashKey(const base::StringPiece& key);
 
 // In the platform crash reporting implementation, these functions set and
-// clear the NUL-termianted key-value pairs.
+// clear the NUL-terminated key-value pairs.
 typedef void (*SetCrashKeyValueFuncT)(const base::StringPiece&,
                                       const base::StringPiece&);
 typedef void (*ClearCrashKeyValueFuncT)(const base::StringPiece&);