Remove the context argument from all WebappRegistry/WebappDataStorage methods.

chrome/android/java/src/org/chromium/chrome/browser/webapps/WebappActivity.java

Index: chrome/android/java/src/org/chromium/chrome/browser/webapps/WebappActivity.java
diff --git a/chrome/android/java/src/org/chromium/chrome/browser/webapps/WebappActivity.java b/chrome/android/java/src/org/chromium/chrome/browser/webapps/WebappActivity.java
index dccd3ef7f67c2c394340100c6a9a48e195ff684f..683741cf8bc5a6ac19ad3093a14d928564cbf97a 100644
--- a/chrome/android/java/src/org/chromium/chrome/browser/webapps/WebappActivity.java
+++ b/chrome/android/java/src/org/chromium/chrome/browser/webapps/WebappActivity.java
@@ -199,7 +199,7 @@ public class WebappActivity extends FullScreenActivity {
         // Kick off the old web app cleanup (if we haven't already) now that we have queued the
         // current web app's storage to be opened.
         if (!mOldWebappCleanupStarted) {
-            WebappRegistry.unregisterOldWebapps(this, System.currentTimeMillis());
+            WebappRegistry.unregisterOldWebapps(System.currentTimeMillis());
             mOldWebappCleanupStarted = true;
         }
     }
@@ -255,8 +255,8 @@ public class WebappActivity extends FullScreenActivity {
     }
 
     protected void initializeSplashScreenWidgets(final int backgroundColor) {
-        WebappRegistry.getWebappDataStorage(this, mWebappInfo.id(),
-                new WebappRegistry.FetchWebappDataStorageCallback() {
+        WebappRegistry.getWebappDataStorage(
+                mWebappInfo.id(), new WebappRegistry.FetchWebappDataStorageCallback() {
                     @Override
                     public void onWebappDataStorageRetrieved(WebappDataStorage storage) {
                         if (storage == null) {
@@ -273,8 +273,7 @@ public class WebappActivity extends FullScreenActivity {
                             }
                         });
                     }
-                }
-        );
+                });
     }
 
     protected void onStorageIsNull(int backgroundColor) {}