Remove unused context in ChromePreferenceManager.

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

Index: chrome/android/java/src/org/chromium/chrome/browser/crash/MinidumpUploadService.java
diff --git a/chrome/android/java/src/org/chromium/chrome/browser/crash/MinidumpUploadService.java b/chrome/android/java/src/org/chromium/chrome/browser/crash/MinidumpUploadService.java
index 30dfc812d13ecb86e1af56c63b6b0a144f062a91..0c2be0afd9f45522c89a6615e6ff77096ef04c76 100644
--- a/chrome/android/java/src/org/chromium/chrome/browser/crash/MinidumpUploadService.java
+++ b/chrome/android/java/src/org/chromium/chrome/browser/crash/MinidumpUploadService.java
@@ -330,13 +330,13 @@ public class MinidumpUploadService extends IntentService {
      * @param fileName is the name of a minidump file that contains the type of crash.
      */
     private void incrementCrashSuccessUploadCount(String fileName) {
-        ChromePreferenceManager.getInstance(this)
-            .incrementCrashSuccessUploadCount(getCrashType(fileName));
+        ChromePreferenceManager.getInstance().incrementCrashSuccessUploadCount(
+                getCrashType(fileName));
     }
 
     private void incrementCrashFailureUploadCount(String fileName) {
-        ChromePreferenceManager.getInstance(this)
-            .incrementCrashFailureUploadCount(getCrashType(fileName));
+        ChromePreferenceManager.getInstance().incrementCrashFailureUploadCount(
+                getCrashType(fileName));
     }
 
     /**