Show the Android Location Settings Dialog when sites want permission.

chrome/browser/android/location_settings.h

Index: chrome/browser/android/location_settings.h
diff --git a/chrome/browser/android/location_settings.h b/chrome/browser/android/location_settings.h
index 5dc407f1f6d6d6d79ca424d8790f4ddb9ac77b4c..6f9d599ca24c979838513fb3154dd53a073d844a 100644
--- a/chrome/browser/android/location_settings.h
+++ b/chrome/browser/android/location_settings.h
@@ -20,13 +20,16 @@ class LocationSettings {
  public:
   virtual ~LocationSettings() {}
 
-  // Returns true if:
-  //  - Location is enabled system-wide (in Android settings)
-  //  - The necessary location permission are granted to Chrome, or if Chrome
-  //    still has the ability to request the permissions to be granted.
-  virtual bool CanSitesRequestLocationPermission(
+  // Returns true if Chrome has location permission.
+  virtual bool HasAndroidLocationPermission() = 0;
+
+  // Returns true if Chrome can prompt to get location permission.
+  virtual bool CanPromptForAndroidLocationPermission(
       content::WebContents* web_contents) = 0;
 
+  // Returns true if the system location is enabled.
+  virtual bool IsSystemLocationSettingEnabled() = 0;
+
   // Returns true iff a prompt can be triggered to ask the user to turn on the
   // system location setting on their device.
   // In particular, returns false if the system location setting is already