Start periodic crash report upload on a separate TaskRunner since it may be blocking.

Bug: b:113620998
Change-Id: I275050d25b33360ab0d020ea9679198a6fbc403a
Reviewed-on: https://chromium-review.googlesource.com/1208824Reviewed-by: Simeon Anfinrud <sanfin@chromium.org>
Reviewed-by: Luke Halliwell <halliwell@chromium.org>
Commit-Queue: Alex Leung <alexleung@google.com>
Cr-Commit-Position: refs/heads/master@{#589240}

chromecast/browser/cast_browser_main_parts.cc

@@ -77,6 +77,7 @@
 #endif
 
 #if defined(OS_ANDROID)
+#include "base/task/post_task.h"
 #include "chromecast/app/android/crash_handler.h"
 #include "components/crash/content/browser/child_exit_observer_android.h"
 #include "components/crash/content/browser/child_process_crash_observer_android.h"
@@ -488,7 +489,13 @@ void CastBrowserMainParts::PreMainMessageLoopRun() {
 #endif  // !defined(OS_ANDROID) && !defined(OS_FUCHSIA)
 
 #if defined(OS_ANDROID)
-  StartPeriodicCrashReportUpload();
+  crash_reporter_runner_ = base::CreateSequencedTaskRunnerWithTraits(
+      {base::MayBlock(), base::TaskPriority::BEST_EFFORT,
+       base::TaskShutdownBehavior::SKIP_ON_SHUTDOWN});
+  crash_reporter_runner_->PostTask(
+      FROM_HERE,
+      base::BindOnce(&CastBrowserMainParts::StartPeriodicCrashReportUpload,
+                     base::Unretained(this)));
 #endif  // defined(OS_ANDROID)
 
   cast_browser_process_->SetNetLog(net_log_.get());

chromecast/browser/cast_browser_main_parts.h

@@ -108,6 +108,7 @@ class CastBrowserMainParts : public content::BrowserMainParts {
 #if defined(OS_ANDROID)
   void StartPeriodicCrashReportUpload();
   void OnStartPeriodicCrashReportUpload();
+  scoped_refptr<base::SequencedTaskRunner> crash_reporter_runner_;
   std::unique_ptr<base::RepeatingTimer> crash_reporter_timer_;
 #endif