[RAPPOR] Remove unused PowerfulFeatures metrics

These metrics for usage of the device motion and orientation sensor APIs
are unused because these features are no longer available in insecure
contexts.

Bug: 1016906
Change-Id: I86f4d7f5979b307753b0ee6c5a96fb4b1d1af6cc
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/1904749
Commit-Queue: Reilly Grant <reillyg@chromium.org>
Reviewed-by: Mark Pearson <mpearson@chromium.org>
Reviewed-by: Daniel Cheng <dcheng@chromium.org>
Cr-Commit-Position: refs/heads/master@{#713973}

third_party/blink/renderer/core/frame/hosts_using_features.cc

@@ -129,12 +129,6 @@ void HostsUsingFeatures::Value::Aggregate(HostsUsingFeatures::Value other) {
 }
 
 void HostsUsingFeatures::Value::RecordHostToRappor(const String& host) {
-  if (Get(Feature::kDeviceMotionInsecureHost))
-    Platform::Current()->RecordRappor(
-        "PowerfulFeatureUse.Host.DeviceMotion.Insecure", host);
-  if (Get(Feature::kDeviceOrientationInsecureHost))
-    Platform::Current()->RecordRappor(
-        "PowerfulFeatureUse.Host.DeviceOrientation.Insecure", host);
   if (Get(Feature::kFullscreenInsecureHost))
     Platform::Current()->RecordRappor(
         "PowerfulFeatureUse.Host.Fullscreen.Insecure", host);

third_party/blink/renderer/core/frame/hosts_using_features.h

@@ -30,8 +30,8 @@ class CORE_EXPORT HostsUsingFeatures {
     kElementCreateShadowRoot_Unused,
     kDocumentRegisterElement_Unused,
     kEventPath_Unused,
-    kDeviceMotionInsecureHost,
-    kDeviceOrientationInsecureHost,
+    kDeviceMotionInsecureHost_Unused,
+    kDeviceOrientationInsecureHost_Unused,
     kFullscreenInsecureHost,
     kGeolocationInsecureHost,
     kGetUserMediaInsecureHost,

tools/metrics/rappor/rappor.xml

@@ -205,23 +205,6 @@ components/rappor/rappor_parameters.h.
   </summary>
 </rappor-metric>
 
-<rappor-metric name="PowerfulFeatureUse.Host.DeviceMotion.Insecure"
-    type="ETLD_PLUS_ONE">
-  <owner>jww@chromium.org</owner>
-  <summary>
-    The host of the URL that uses the device motion API from an insecure origin.
-  </summary>
-</rappor-metric>
-
-<rappor-metric name="PowerfulFeatureUse.Host.DeviceOrientation.Insecure"
-    type="ETLD_PLUS_ONE">
-  <owner>jww@chromium.org</owner>
-  <summary>
-    The host of the URL that uses the device orientation API from an insecure
-    origin.
-  </summary>
-</rappor-metric>
-
 <rappor-metric name="PowerfulFeatureUse.Host.Fullscreen.Insecure"
     type="ETLD_PLUS_ONE">
   <owner>jww@chromium.org</owner>