Introduces snackbar enum, & other snackbar classes on android for translate user actions.

CL#1 This snackbar will be used to convey to the user the result
of any action performed on the Translate infobar.

BUG=713514
TBR=groby@chromium.org

Review-Url: https://codereview.chromium.org/2838833003
Cr-Commit-Position: refs/heads/master@{#468302}

chrome/android/java/src/org/chromium/chrome/browser/infobar/TranslateCompactInfoBar.java

@@ -158,14 +158,17 @@ class TranslateCompactInfoBar extends InfoBar
             case TranslateMenu.ID_OVERFLOW_ALWAYS_TRANSLATE:
                 nativeApplyBoolTranslateOption(
                         mNativeTranslateInfoBarPtr, TranslateOption.ALWAYS_TRANSLATE, true);
+                showSnackbar(TranslateSnackbarType.ALWAYS_TRANSLATE);
                 return;
             case TranslateMenu.ID_OVERFLOW_NEVER_LANGUAGE:
                 nativeApplyBoolTranslateOption(
                         mNativeTranslateInfoBarPtr, TranslateOption.NEVER_TRANSLATE, true);
+                showSnackbar(TranslateSnackbarType.NEVER_TRANSLATE);
                 return;
             case TranslateMenu.ID_OVERFLOW_NEVER_SITE:
                 nativeApplyBoolTranslateOption(
                         mNativeTranslateInfoBarPtr, TranslateOption.NEVER_TRANSLATE_SITE, true);
+                showSnackbar(TranslateSnackbarType.NEVER_TRANSLATE_SITE);
                 return;
             case TranslateMenu.ID_OVERFLOW_NOT_THIS_LANGUAGE:
                 mMenuHelper.show(TranslateMenu.MENU_SOURCE_LANGUAGE);
@@ -175,6 +178,10 @@ class TranslateCompactInfoBar extends InfoBar
         }
     }
 
+    private void showSnackbar(int snackbarType) {
+        // TODO(ramyasharma): Show snackbar.
+    }
+
     @Override
     public void onTargetMenuItemClicked(String code) {
         // Reset target code in both UI and native.

chrome/android/java/src/org/chromium/chrome/browser/infobar/TranslateSnackbarController.java

+// Copyright 2017 The Chromium Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style license that can be
+// found in the LICENSE file.
+
+package org.chromium.chrome.browser.infobar;
+
+import org.chromium.chrome.browser.snackbar.SnackbarManager.SnackbarController;
+
+/**
+ * The controller for translate UI snackbars.
+ */
+class TranslateSnackbarController implements SnackbarController {
+    @Override
+    public void onDismissNoAction(Object actionData) {
+        // No action.
+    }
+
+    @Override
+    public void onAction(Object actionData) {
+        nativeToggleTranslateOption(((Integer) actionData).intValue());
+    }
+
+    private static native void nativeToggleTranslateOption(int type);
+};

chrome/android/java_sources.gni

@@ -472,6 +472,7 @@ chrome_java_sources = [
   "java/src/org/chromium/chrome/browser/infobar/TranslateNeverPanel.java",
   "java/src/org/chromium/chrome/browser/infobar/TranslateOptions.java",
   "java/src/org/chromium/chrome/browser/infobar/TranslateSubPanel.java",
+  "java/src/org/chromium/chrome/browser/infobar/TranslateSnackbarController.java",
   "java/src/org/chromium/chrome/browser/infobar/UpdatePasswordInfoBar.java",
   "java/src/org/chromium/chrome/browser/infobar/translate/TranslateMenu.java",
   "java/src/org/chromium/chrome/browser/infobar/translate/TranslateMenuHelper.java",

chrome/browser/BUILD.gn

@@ -4146,6 +4146,7 @@ if (is_android) {
       "../android/java/src/org/chromium/chrome/browser/infobar/SubresourceFilterInfoBar.java",
       "../android/java/src/org/chromium/chrome/browser/infobar/TranslateCompactInfoBar.java",
       "../android/java/src/org/chromium/chrome/browser/infobar/TranslateInfoBar.java",
+      "../android/java/src/org/chromium/chrome/browser/infobar/TranslateSnackbarController.java",
       "../android/java/src/org/chromium/chrome/browser/infobar/UpdatePasswordInfoBar.java",
       "../android/java/src/org/chromium/chrome/browser/instantapps/InstantAppsSettings.java",
       "../android/java/src/org/chromium/chrome/browser/invalidation/InvalidationServiceFactory.java",

chrome/browser/translate/android/translate_utils.h

@@ -25,6 +25,16 @@ class TranslateUtils {
     OPTION_NEVER_TRANSLATE_SITE
   };
 
+  // A Java counterpart will be generated for this enum.
+  // GENERATED_JAVA_ENUM_PACKAGE: org.chromium.chrome.browser.infobar
+  // GENERATED_JAVA_PREFIX_TO_STRIP:TYPE_
+  enum TranslateSnackbarType {
+    TYPE_NONE,
+    TYPE_ALWAYS_TRANSLATE,
+    TYPE_NEVER_TRANSLATE,
+    TYPE_NEVER_TRANSLATE_SITE
+  };
+
   static base::android::ScopedJavaLocalRef<jobjectArray> GetJavaLanguages(
       JNIEnv* env,
       translate::TranslateInfoBarDelegate* delegate);

chrome/browser/ui/android/infobars/translate_compact_infobar.cc

@@ -107,14 +107,17 @@ void TranslateCompactInfoBar::ApplyBoolTranslateOption(
     jboolean value) {
   translate::TranslateInfoBarDelegate* delegate = GetDelegate();
   if (option == TranslateUtils::OPTION_ALWAYS_TRANSLATE) {
-    if (delegate->ShouldAlwaysTranslate() != value)
+    if (delegate->ShouldAlwaysTranslate() != value) {
       delegate->ToggleAlwaysTranslate();
+    }
   } else if (option == TranslateUtils::OPTION_NEVER_TRANSLATE) {
-    if (value && delegate->IsTranslatableLanguageByPrefs())
+    if (value && delegate->IsTranslatableLanguageByPrefs()) {
       delegate->ToggleTranslatableLanguageByPrefs();
+    }
   } else if (option == TranslateUtils::OPTION_NEVER_TRANSLATE_SITE) {
-    if (value && !delegate->IsSiteBlacklisted())
+    if (value && !delegate->IsSiteBlacklisted()) {
       delegate->ToggleSiteBlacklist();
+    }
   } else {
     DCHECK(false);
   }