Handled nullptr argument in WaitForExit() and WaitForExitWithTimeout() methods.

base/process/process.h

Index: base/process/process.h
diff --git a/base/process/process.h b/base/process/process.h
index 808baeb1fc6ebdf7a9603b7b9b8d070b37694cdd..296f61252ade189e6050eef391315a18f3d2ea43 100644
--- a/base/process/process.h
+++ b/base/process/process.h
@@ -101,10 +101,12 @@ class BASE_EXPORT Process {
   // Waits for the process to exit. Returns true on success.
   // On POSIX, if the process has been signaled then |exit_code| is set to -1.
   // On Linux this must be a child process, however on Mac and Windows it can be
-  // any process.
+  // any process. exit_code is optional if exit_code is not required NULL can be

[Lei Zhang, 2015/05/06 08:05:15]

We refer to variables as |variable_name|. See line 98 for example.

[Lei Zhang, 2015/05/06 08:05:15]

The grammar here needs some work.

[g.mehndiratt, 2015/05/06 10:52:35]

On 2015/05/06 08:05:15, Lei Zhang wrote:

Acknowledged.

[g.mehndiratt, 2015/05/06 10:52:35]

On 2015/05/06 08:05:15, Lei Zhang wrote:

Acknowledged.

+  // passed.
   bool WaitForExit(int* exit_code);
 
   // Same as WaitForExit() but only waits for up to |timeout|.
+  // exit_code is optional if exit_code is not required NULL can be passed.
   bool WaitForExitWithTimeout(TimeDelta timeout, int* exit_code);
 
   // A process is backgrounded when it's priority is lower than normal.