Add stats to distinguish android renderer crashes.

components/crash/content/browser/crash_dump_manager_android.h

Index: components/crash/content/browser/crash_dump_manager_android.h
diff --git a/components/crash/content/browser/crash_dump_manager_android.h b/components/crash/content/browser/crash_dump_manager_android.h
index e3f2391efe775851903cdfa88b6617599c646109..3aca0c02a9243ce6ce26e74384d3cd969403e02e 100644
--- a/components/crash/content/browser/crash_dump_manager_android.h
+++ b/components/crash/content/browser/crash_dump_manager_android.h
@@ -48,8 +48,17 @@ class CrashDumpManager : public content::BrowserChildProcessObserver,
  private:
   typedef std::map<int, base::FilePath> ChildProcessIDToMinidumpPath;
 
+  // This enum is used to back a UMA histogram, and must be treated as
+  // append-only.
+  enum ExitStatus {
+    EMPTY_MINIDUMP = 0,
+    VALID_MINIDUMP = 1,
+    COUNT = 2
+  };
+
   static void ProcessMinidump(const base::FilePath& minidump_path,
-                              base::ProcessHandle pid);
+                              base::ProcessHandle pid,
+                              bool recordExitStatus);
 
   // content::BrowserChildProcessObserver implementation:
   void BrowserChildProcessHostDisconnected(
@@ -64,7 +73,9 @@ class CrashDumpManager : public content::BrowserChildProcessObserver,
                const content::NotificationDetails& details) override;
 
   // Called on child process exit (including crash).
-  void OnChildExit(int child_process_id, base::ProcessHandle pid);
+  void OnChildExit(int child_process_id,
+                   base::ProcessHandle pid,
+                   bool recordExitStatus);
 
   content::NotificationRegistrar notification_registrar_;