Revert of Add OnDisplayMetricsChanged in DisplayObserver. (https://codereview.chromium.org/259253002/)

Reason for revert:
Breaks DesktopScreenX11Test.RemoveMonitorOnRight and AddMonitorToTheRight on Linux Tests

TBR=mlamouri@chromium.org
NOTRY=true
NOTREECHECKS=true

http://build.chromium.org/p/chromium.linux/buildstatus?builder=Linux%20Tests&number=11092

Original issue's description:
> Add OnDisplayMetricsChanged in DisplayObserver.
> 
> This replaces OnDisplayBoundsChanged and add a MetricsType
> parameter so consumers can now which metrics has changed. The
> current set of MetricsType include bounds, workarea and rotation.
> 
> BUG=162827
> 
> Committed: https://src.chromium.org/viewvc/chrome?view=rev&revision=271768

Review URL: https://codereview.chromium.org/294963004

git-svn-id: svn://svn.chromium.org/chrome/trunk/src@271782 0039d316-1c4b-4281-b951-d872f2087c98

1 files changed, 4 insertions, 4 deletions

diff --git a/chrome/browser/ui/webui/options/chromeos/display_overscan_handler.cc b/chrome/browser/ui/webui/options/chromeos/display_overscan_handler.cc
index d7d5d92..c176b0b 100644
--- a/chrome/browser/ui/webui/options/chromeos/display_overscan_handler.cc
+++ b/chrome/browser/ui/webui/options/chromeos/display_overscan_handler.cc
@@ -81,6 +81,10 @@ void DisplayOverscanHandler::RegisterMessages() {
                  base::Unretained(this)));
 }
 
+void DisplayOverscanHandler::OnDisplayBoundsChanged(
+    const gfx::Display& display) {
+}
+
 void DisplayOverscanHandler::OnDisplayAdded(const gfx::Display& new_display) {
   web_ui()->CallJavascriptFunction(
       "options.DisplayOverscan.onOverscanCanceled");
@@ -91,10 +95,6 @@ void DisplayOverscanHandler::OnDisplayRemoved(const gfx::Display& old_display) {
       "options.DisplayOverscan.onOverscanCanceled");
 }
 
-void DisplayOverscanHandler::OnDisplayMetricsChanged(const gfx::Display&,
-                                                     uint32_t) {
-}
-
 void DisplayOverscanHandler::HandleStart(const base::ListValue* args) {
   int64 display_id = gfx::Display::kInvalidDisplayID;
   std::string id_value;