Move destruction of WebRtcLogUploader to post threads teardown.

chrome/browser/browser_process_impl.cc

Index: chrome/browser/browser_process_impl.cc
diff --git a/chrome/browser/browser_process_impl.cc b/chrome/browser/browser_process_impl.cc
index e87427b7971553ffc7a1788944d2c917979258e3..2569472868b7cf6d9bf46093c6e9a0212fb0b2f9 100644
--- a/chrome/browser/browser_process_impl.cc
+++ b/chrome/browser/browser_process_impl.cc
@@ -286,7 +286,9 @@ void BrowserProcessImpl::StartTearDown() {
   platform_part()->StartTearDown();
 
 #if defined(ENABLE_WEBRTC)
-  webrtc_log_uploader_.reset();
+  // Cancel any uploads to release the system url request context references.
+  if (webrtc_log_uploader_)
+    webrtc_log_uploader_->CancelURLFetcherOperations();
 #endif
 
   if (local_state())
@@ -297,6 +299,11 @@ void BrowserProcessImpl::PostDestroyThreads() {
   // With the file_thread_ flushed, we can release any icon resources.
   icon_manager_.reset();
 
+#if defined(ENABLE_WEBRTC)
+  // Must outlive the file thread.
+  webrtc_log_uploader_.reset();
+#endif
+
   // Reset associated state right after actual thread is stopped,
   // as io_thread_.global_ cleanup happens in CleanUp on the IO
   // thread, i.e. as the thread exits its message loop.