[sensors] Add Permission guard to the generic sensor apis.

chrome/browser/ui/content_settings/content_setting_image_model.cc

Index: chrome/browser/ui/content_settings/content_setting_image_model.cc
diff --git a/chrome/browser/ui/content_settings/content_setting_image_model.cc b/chrome/browser/ui/content_settings/content_setting_image_model.cc
index 43bfc3e073eba46813e5c09e77da5f63e3acbdf8..cae5c68f07f076ec06e15345e98c45f7da92b556 100644
--- a/chrome/browser/ui/content_settings/content_setting_image_model.cc
+++ b/chrome/browser/ui/content_settings/content_setting_image_model.cc
@@ -218,8 +218,8 @@ ContentSettingSimpleImageModel::CreateForContentTypeForTesting(
   if (content_settings_type == CONTENT_SETTINGS_TYPE_MIDI_SYSEX)
     return base::MakeUnique<ContentSettingMIDISysExImageModel>();
 
-  if (content_settings_type == CONTENT_SETTINGS_TYPE_AUTOMATIC_DOWNLOADS)
-    return base::MakeUnique<ContentSettingDownloadsImageModel>();
+  if (content_settings_type == CONTENT_SETTINGS_TYPE_SENSORS)
+    return base::MakeUnique<ContentSettingSensorImageModel>();
 
   return base::MakeUnique<ContentSettingBlockedImageModel>(
       content_settings_type);
@@ -526,6 +526,35 @@ void ContentSettingMIDISysExImageModel::UpdateFromWebContents(
                                             : IDS_MIDI_SYSEX_BLOCKED_TOOLTIP));
 }
 
+// Sensors ------------------------------------------------------------------
+
+ContentSettingSensorImageModel::ContentSettingSensorImageModel()
+    : ContentSettingSimpleImageModel(CONTENT_SETTINGS_TYPE_SENSORS) {}
+
+void ContentSettingSensorImageModel::UpdateFromWebContents(
+    WebContents* web_contents) {
+  set_visible(false);
+  if (!web_contents)
+    return;
+  TabSpecificContentSettings* content_settings =
+      TabSpecificContentSettings::FromWebContents(web_contents);
+  if (!content_settings)
+    return;
+  // TODO(riju): when UMA is ready.
+  set_visible(true);
+
+  // If any embedded site has access the allowed icon takes priority over the
+  // blocked icon.
+  unsigned int state_flags = 0;
+  bool allowed =
+      !!(state_flags & ContentSettingsUsagesState::TABSTATE_HAS_ANY_ALLOWED);
+  set_icon_by_vector_id(gfx::VectorIconId::MIDI,  // TODO(riju)
+                        allowed ? gfx::VectorIconId::VECTOR_ICON_NONE
+                                : gfx::VectorIconId::BLOCKED_BADGE);
+  set_tooltip(l10n_util::GetStringUTF16(allowed ? IDS_SENSORS_ALLOWED_TOOLTIP
+                                                : IDS_SENSORS_BLOCKED_TOOLTIP));
+}
+
 // Automatic downloads ---------------------------------------------------------
 
 ContentSettingDownloadsImageModel::ContentSettingDownloadsImageModel()