fix scale issue in voice interaction context.

BUG=b:64029031
TEST=None

Change-Id: I3b14f8f6f2fc3867548578937334a288b33e06ed
Reviewed-on: https://chromium-review.googlesource.com/597169Reviewed-by: Scott Violet <sky@chromium.org>
Reviewed-by: Luis Hector Chavez <lhchavez@chromium.org>
Commit-Queue: Muyuan Li <muyuanli@chromium.org>
Cr-Commit-Position: refs/heads/master@{#491536}

chrome/browser/chromeos/arc/voice_interaction/arc_voice_interaction_arc_home_service.cc

@@ -31,6 +31,7 @@
 #include "content/public/browser/web_contents.h"
 #include "ui/accessibility/platform/ax_snapshot_node_android_platform.h"
 #include "ui/aura/window.h"
+#include "ui/compositor/dip_util.h"
 #include "ui/snapshot/snapshot.h"
 #include "ui/wm/public/activation_client.h"
 #include "url/gurl.h"
@@ -173,10 +174,11 @@ void ArcVoiceInteractionArcHomeService::GetVoiceInteractionStructure(
     return;
   }
 
-  web_contents->RequestAXTreeSnapshot(
-      base::Bind(&RequestVoiceInteractionStructureCallback, callback,
-                 browser->window()->GetBounds(),
-                 web_contents->GetLastCommittedURL().spec()));
+  web_contents->RequestAXTreeSnapshot(base::Bind(
+      &RequestVoiceInteractionStructureCallback, callback,
+      ui::ConvertRectToPixel(browser->window()->GetNativeWindow()->layer(),
+                             browser->window()->GetBounds()),
+      web_contents->GetLastCommittedURL().spec()));
 }
 
 void ArcVoiceInteractionArcHomeService::OnVoiceInteractionOobeSetupComplete() {