Redesign of the chrome://flags page

+ Improve responsive design for mobile devices. Larger touch targets.
+ Simplified the warning blurb.
+ Add in page flag search for better filtering, significantly better
search experience on mobile devices.
+ Add tab interface separating Available and Unavailable flags.
+ Uses updated modern colour scheme and typography.
+ Display Chrome version number on the page.

Bug: 622640
Change-Id: I55f1739ab12c4d28c7ace0f234fabb30577abf21
Reviewed-on: https://chromium-review.googlesource.com/693256
Reviewed-by: Alexei Svitkine <[email protected]>
Reviewed-by: Colin Blundell <[email protected]>
Reviewed-by: Bernhard Bauer <[email protected]>
Reviewed-by: Eugene But <[email protected]>
Commit-Queue: Edward Jung <[email protected]>
Cr-Commit-Position: refs/heads/master@{#507085}
diff --git a/components/flags_ui/flags_ui_constants.cc b/components/flags_ui/flags_ui_constants.cc
index b37ea40e..6168af4 100644
--- a/components/flags_ui/flags_ui_constants.cc
+++ b/components/flags_ui/flags_ui_constants.cc
@@ -21,13 +21,15 @@
 const char kDisable[] = "disable";
 const char kEnable[] = "enable";
 const char kFlagsBlurb[] = "flagsBlurb";
-const char kFlagsLongTitle[] = "flagsLongTitle";
+const char kFlagsTitle[] = "flagsTitle";
 const char kFlagsNoExperimentsAvailable[] = "flagsNoExperimentsAvailable";
+const char kFlagsNoMatches[] = "flagsNoMatches";
 const char kFlagsNotSupported[] = "flagsNotSupported";
 const char kFlagsRestartButton[] = "flagsRestartButton";
 const char kFlagsRestartNotice[] = "flagsRestartNotice";
-const char kFlagsTableTitle[] = "flagsTableTitle";
-const char kFlagsUnsupportedTableTitle[] = "flagsUnsupportedTableTitle";
+const char kFlagsSearchPlaceholder[] = "flagsSearchPlaceholder";
+const char kFlagsSupportedTitle[] = "flagsSupportedTitle";
+const char kFlagsUnsupportedTitle[] = "flagsUnsupportedTitle";
 const char kFlagsWarningHeader[] = "flagsWarningHeader";
 const char kNeedsRestart[] = "needsRestart";
 const char kOwnerWarning[] = "ownerWarning";
@@ -38,5 +40,6 @@
 const char kShowOwnerWarning[] = "showOwnerWarning";
 const char kSupportedFeatures[] = "supportedFeatures";
 const char kUnsupportedFeatures[] = "unsupportedFeatures";
+const char kVersion[] = "version";
 
 }  // namespace flags_ui