Fix a problem that the suggestion popup does not disappear when initiating navigation.

Steps to reproduce:
1. Type some keys in |mUrlTextView| to show some suggestions.
2. Press "Go" button.

What heppended:
The url loading starts but the suggestions does not disappear.

BUG=none

Review URL: https://codereview.chromium.org/312673007

git-svn-id: svn://svn.chromium.org/chrome/trunk/src@274575 0039d316-1c4b-4281-b951-d872f2087c98

chrome/android/shell/java/src/org/chromium/chrome/shell/ChromeShellToolbar.java

@@ -47,6 +47,8 @@ public class ChromeShellToolbar extends LinearLayout {
     private AppMenuHandler mMenuHandler;
     private AppMenuButtonHelper mAppMenuButtonHelper;
 
+    private SuggestionPopup mSuggestionPopup;
+
     /**
      * @param context The Context the view is running in.
      * @param attrs   The attributes of the XML tag that is inflating the view.
@@ -102,6 +104,7 @@ public class ChromeShellToolbar extends LinearLayout {
                     return false;
                 }
 
+                mSuggestionPopup.dismissPopup();
                 mTab.loadUrlWithSanitization(mUrlTextView.getText().toString());
                 mUrlTextView.clearFocus();
                 setKeyboardVisibilityForUrl(false);
@@ -118,7 +121,9 @@ public class ChromeShellToolbar extends LinearLayout {
                 }
             }
         });
-        mUrlTextView.addTextChangedListener(new SuggestionPopup(getContext(), mUrlTextView, this));
+
+        mSuggestionPopup = new SuggestionPopup(getContext(), mUrlTextView, this);
+        mUrlTextView.addTextChangedListener(mSuggestionPopup);
     }
 
     private void initializeMenuButton() {

chrome/android/shell/java/src/org/chromium/chrome/shell/omnibox/SuggestionPopup.java

@@ -61,7 +61,7 @@ public class SuggestionPopup implements OnSuggestionsReceivedListener, TextWatch
         dismissPopup();
     }
 
-    private void dismissPopup() {
+    public void dismissPopup() {
         if (mSuggestionsPopup != null) {
             mSuggestionsPopup.dismiss();
             mSuggestionsPopup = null;