Implement search engine auto switch when entering or leaving some locale

chrome/android/java/src/org/chromium/chrome/browser/locale/SpecialLocaleHandler.java

Index: chrome/android/java/src/org/chromium/chrome/browser/locale/SpecialLocaleHandler.java
diff --git a/chrome/android/java/src/org/chromium/chrome/browser/locale/SpecialLocaleHandler.java b/chrome/android/java/src/org/chromium/chrome/browser/locale/SpecialLocaleHandler.java
index 593a99091e5e012ae4f03f4eca1683c48747cfa1..2745c95f6d30443ed95754f4308a30dabb4e4e03 100644
--- a/chrome/android/java/src/org/chromium/chrome/browser/locale/SpecialLocaleHandler.java
+++ b/chrome/android/java/src/org/chromium/chrome/browser/locale/SpecialLocaleHandler.java
@@ -62,9 +62,18 @@ public class SpecialLocaleHandler {
         nativeOverrideDefaultSearchProvider(mNativeSpecialLocaleHandler);
     }
 
+    /**
+     * Sets the default search provider back to Google.
+     */
+    public void setGoogleAsDefaultSearch() {
+        assert mNativeSpecialLocaleHandler != 0;
+        nativeSetGoogleAsDefaultSearch(mNativeSpecialLocaleHandler);
+    }
+
     private static native long nativeInit(String localeId);
     private static native void nativeDestroy(long nativeSpecialLocaleHandler);
     private static native boolean nativeLoadTemplateUrls(long nativeSpecialLocaleHandler);
     private static native void nativeRemoveTemplateUrls(long nativeSpecialLocaleHandler);
     private static native void nativeOverrideDefaultSearchProvider(long nativeSpecialLocaleHandler);
+    private static native void nativeSetGoogleAsDefaultSearch(long nativeSpecialLocaleHandler);
 }