Chrome OS: avoid suspending on lid close when casting is active.

chrome/browser/media/media_capture_devices_dispatcher.cc

Index: chrome/browser/media/media_capture_devices_dispatcher.cc
diff --git a/chrome/browser/media/media_capture_devices_dispatcher.cc b/chrome/browser/media/media_capture_devices_dispatcher.cc
index 29c7afbec8d820c24b7dbcf33b752af116bfd7db..38196d3c8b410ca04d714bd24f4672bec203804e 100644
--- a/chrome/browser/media/media_capture_devices_dispatcher.cc
+++ b/chrome/browser/media/media_capture_devices_dispatcher.cc
@@ -105,6 +105,30 @@ bool IsOriginWhitelistedForScreenCapture(const GURL& origin) {
 #endif
 }
 
+#if defined(OS_CHROMEOS)
+// Returns true of the security origin is associated with casting.
+bool IsOriginForCasting(const GURL& origin) {
+#if defined(OFFICIAL_BUILD)
+  // Whitelisted tab casting extensions.
+  if (origin.spec() == "chrome-extension://pkedcjkdefgpdelpbcmbmeomcjbeemfm/" ||
+      origin.spec() == "chrome-extension://fmfcbgogabcbclcofgocippekhfcmgfj/" ||
+      origin.spec() == "chrome-extension://hfaagokkkhdbgiakmmlclaapfelnkoah/") {
+    return true;
+  }
+  // Check against hashed origins.
+  const std::string origin_hash = base::SHA1HashString(origin.spec());
+  DCHECK_EQ(origin_hash.length(), base::kSHA1Length);
+  const std::string hexencoded_origin_hash =
+      base::HexEncode(origin_hash.data(), origin_hash.length());
+  return
+      hexencoded_origin_hash == "3C2705BC432E7C51CA8553FDC5BEE873FF2468EE" ||
+      hexencoded_origin_hash == "50F02B8A668CAB274527D58356F07C2143080FCC";
+#else
+  return false;
+#endif
+}
+#endif
+
 // Helper to get title of the calling application shown in the screen capture
 // notification.
 base::string16 GetApplicationTitle(content::WebContents* web_contents,
@@ -395,7 +419,7 @@ void MediaCaptureDevicesDispatcher::ProcessScreenCaptureAccessRequest(
       // display the notification for stream capture.
       bool display_notification = !component_extension;
 
-      ui = GetDevicesForDesktopCapture(devices, screen_id,  capture_audio,
+      ui = GetDevicesForDesktopCapture(devices, screen_id, capture_audio,
                                        display_notification, application_title);
     }
   }
@@ -755,6 +779,18 @@ void MediaCaptureDevicesDispatcher::UpdateMediaRequestStateOnUIThread(
     }
   }
 
+#if defined(OS_CHROMEOS)
+  if (IsOriginForCasting(device.security_origin) &&
+      IsVideoMediaType(device.type)) {
+    // Notify ash that casting state has changed.
+    if (state == content::MEDIA_REQUEST_STATE_DONE) {
+      ash::Shell::GetInstance()->OnCastingStateChanged(true);
+    } else if (state == content::MEDIA_REQUEST_STATE_CLOSING) {
+      ash::Shell::GetInstance()->OnCastingStateChanged(false);
+    }
+  }
+#endif
+
   FOR_EACH_OBSERVER(Observer, observers_,
                     OnRequestUpdate(render_process_id,
                                     render_view_id,