Add a file observer to monitor if there is a crash

chrome/android/java/src/org/chromium/chrome/browser/crash/CrashFileManager.java

Index: chrome/android/java/src/org/chromium/chrome/browser/crash/CrashFileManager.java
diff --git a/chrome/android/java/src/org/chromium/chrome/browser/crash/CrashFileManager.java b/chrome/android/java/src/org/chromium/chrome/browser/crash/CrashFileManager.java
index b03cfeba08cc52c3972a9d06cd1a3faf962fd772..a1e5ac05161471449e7d326e31e628bc28a2e7a2 100644
--- a/chrome/android/java/src/org/chromium/chrome/browser/crash/CrashFileManager.java
+++ b/chrome/android/java/src/org/chromium/chrome/browser/crash/CrashFileManager.java
@@ -33,6 +33,9 @@ public class CrashFileManager {
     private static final Pattern MINIDUMP_FIRST_TRY_PATTERN =
             Pattern.compile("\\.dmp([0-9]*)$\\z");
 
+    private static final Pattern MINIDUMP_MIME_FIRST_TRY_PATTERN =
+            Pattern.compile("\\.dmp([0-9]+)$\\z");
+
     private static final Pattern MINIDUMP_PATTERN =
             Pattern.compile("\\.dmp([0-9]*)(\\.try[0-9])?\\z");
 
@@ -79,6 +82,10 @@ public class CrashFileManager {
         return getMatchingFiles(MINIDUMP_FIRST_TRY_PATTERN);
     }
 
+    public static boolean isMinidumpMIMEFirstTry(String path) {
+        return MINIDUMP_MIME_FIRST_TRY_PATTERN.matcher(path).find();
+    }
+
     public static String tryIncrementAttemptNumber(File mFileToUpload) {
         String newName = filenameWithIncrementedAttemptNumber(mFileToUpload.getPath());
         return mFileToUpload.renameTo(new File(newName)) ? newName : null;