[Android] Output unchecked warnings and fix existing instances.

chrome/android/java/src/org/chromium/chrome/browser/ChromeBrowserProviderClient.java

Index: chrome/android/java/src/org/chromium/chrome/browser/ChromeBrowserProviderClient.java
diff --git a/chrome/android/java/src/org/chromium/chrome/browser/ChromeBrowserProviderClient.java b/chrome/android/java/src/org/chromium/chrome/browser/ChromeBrowserProviderClient.java
index d108f1f603981bcd0246416aa98095ee67346b60..e9a5f2dd44a1f3eb8d921c2441ec3dbe718afdbe 100644
--- a/chrome/android/java/src/org/chromium/chrome/browser/ChromeBrowserProviderClient.java
+++ b/chrome/android/java/src/org/chromium/chrome/browser/ChromeBrowserProviderClient.java
@@ -146,7 +146,7 @@ public class ChromeBrowserProviderClient {
     private static Bundle argsToBundle(Object ... args) {
         Bundle methodArgs = new Bundle();
         for (int i = 0; i < args.length; ++i) {
-            Class argClass = args[i].getClass();
+            Class<? extends Object> argClass = args[i].getClass();
             if (Parcelable.class.isAssignableFrom(argClass)) {
                 methodArgs.putParcelable(ChromeBrowserProvider.argKey(i), (Parcelable) args[i]);
             } else if (Serializable.class.isAssignableFrom(argClass)) {
@@ -159,6 +159,7 @@ public class ChromeBrowserProviderClient {
         return methodArgs;
     }
 
+    @SuppressWarnings("unchecked")
     private static <T extends Object> T chromeBrowserProviderCall(Class returnType, String name,
             Context context, Bundle args) {
         Bundle result = context.getContentResolver().call(getPrivateProviderUri(context),