Geolocation: move polling policy to its own file.

content/browser/geolocation/wifi_data_provider_common.h

Index: content/browser/geolocation/wifi_data_provider_common.h
diff --git a/content/browser/geolocation/wifi_data_provider_common.h b/content/browser/geolocation/wifi_data_provider_common.h
index 5f15e0919bf3e0c558ae970f965fc01ff68aee44..bf891e9236f0bb35d60aba0e8c3f88f56907fcd8 100644
--- a/content/browser/geolocation/wifi_data_provider_common.h
+++ b/content/browser/geolocation/wifi_data_provider_common.h
@@ -12,6 +12,7 @@
 #include "base/memory/weak_ptr.h"
 #include "base/strings/string16.h"
 #include "content/browser/geolocation/wifi_data_provider.h"
+#include "content/browser/geolocation/wifi_polling_policy.h"
 #include "content/common/content_export.h"
 
 namespace content {
@@ -19,45 +20,6 @@ namespace content {
 // Converts a MAC address stored as an array of uint8 to a string.
 string16 MacAddressAsString16(const uint8 mac_as_int[6]);
 
-// Allows sharing and mocking of the update polling policy function.
-class PollingPolicyInterface {
- public:
-  virtual ~PollingPolicyInterface() {}
-  // Calculates the new polling interval for wiFi scans, given the previous
-  // interval and whether the last scan produced new results.
-  virtual void UpdatePollingInterval(bool scan_results_differ) = 0;
-  virtual int PollingInterval() = 0;
-  virtual int NoWifiInterval() = 0;
-};
-
-// Generic polling policy, constants are compile-time parameterized to allow
-// tuning on a per-platform basis.
-template<int DEFAULT_INTERVAL,
-         int NO_CHANGE_INTERVAL,
-         int TWO_NO_CHANGE_INTERVAL,
-         int NO_WIFI_INTERVAL>
-class GenericPollingPolicy : public PollingPolicyInterface {
- public:
-  GenericPollingPolicy() : polling_interval_(DEFAULT_INTERVAL) {}
-  // PollingPolicyInterface
-  virtual void UpdatePollingInterval(bool scan_results_differ) {
-    if (scan_results_differ) {
-      polling_interval_ = DEFAULT_INTERVAL;
-    } else if (polling_interval_ == DEFAULT_INTERVAL) {
-      polling_interval_ = NO_CHANGE_INTERVAL;
-    } else {
-      DCHECK(polling_interval_ == NO_CHANGE_INTERVAL ||
-             polling_interval_ == TWO_NO_CHANGE_INTERVAL);
-      polling_interval_ = TWO_NO_CHANGE_INTERVAL;
-    }
-  }
-  virtual int PollingInterval() { return polling_interval_; }
-  virtual int NoWifiInterval() { return NO_WIFI_INTERVAL; }
-
- private:
-  int polling_interval_;
-};
-
 // Base class to promote code sharing between platform specific wifi data
 // providers. It's optional for specific platforms to derive this, but if they
 // do polling behavior is taken care of by this base class, and all the platform