MD Settings: URL encode text queries before adding them to the URL.

chrome/browser/resources/settings/settings_main/settings_main.js

Index: chrome/browser/resources/settings/settings_main/settings_main.js
diff --git a/chrome/browser/resources/settings/settings_main/settings_main.js b/chrome/browser/resources/settings/settings_main/settings_main.js
index c28e1efe35ca10fcd9ff57bf7d1e603e6d34fdf8..a7c1e8d95346d34080e296d80ca891240b17dca0 100644
--- a/chrome/browser/resources/settings/settings_main/settings_main.js
+++ b/chrome/browser/resources/settings/settings_main/settings_main.js
@@ -270,7 +270,7 @@ Polymer({
           this.toolbarSpinnerActive = false;
           this.inSearchMode_ = !result.wasClearSearch;
           this.showNoResultsFound_ =
-              this.inSearchMode_ && result.didFindMatches;
+              this.inSearchMode_ && !result.didFindMatches;

[dpapad, 2017/05/27 00:18:10]

The value of |result.didFindMatches| was wrong, but when it comes to booleans, 2
wrongs make 1 right :>

basic_page.js supplied the wrong value and settings_main.js used "!" where it
should not, cancelling each other's errors.

I noticed this problem while fixing this bug, so I decided to keep it in the
same CL.

 
           if (this.inSearchMode_) {
             Polymer.IronA11yAnnouncer.requestAvailability();