Remove implicit HANDLE conversions from chrome.

chrome/browser/extensions/api/image_writer_private/removable_storage_provider_win.cc

Index: chrome/browser/extensions/api/image_writer_private/removable_storage_provider_win.cc
diff --git a/chrome/browser/extensions/api/image_writer_private/removable_storage_provider_win.cc b/chrome/browser/extensions/api/image_writer_private/removable_storage_provider_win.cc
index e65f6e93ad42f2fb4a36ad86ba675159476767d6..6dd0e745de4c2dcc8a646d31d218fa5c5d7a3b58 100644
--- a/chrome/browser/extensions/api/image_writer_private/removable_storage_provider_win.cc
+++ b/chrome/browser/extensions/api/image_writer_private/removable_storage_provider_win.cc
@@ -69,7 +69,7 @@ bool AddDeviceInfo(HANDLE interface_enumerator,
       0,              // No optional flags.
       NULL));          // No template file.
 
-  if (!device_handle) {
+  if (!device_handle.IsValid()) {
     PLOG(ERROR) << "Opening device handle failed.";
     return false;
   }
@@ -77,7 +77,7 @@ bool AddDeviceInfo(HANDLE interface_enumerator,
   DISK_GEOMETRY geometry;
   DWORD bytes_returned;
   status = DeviceIoControl(
-      device_handle,                 // Device handle.
+      device_handle.Get(),           // Device handle.
       IOCTL_DISK_GET_DRIVE_GEOMETRY, // Flag to request disk size.
       NULL,                          // Optional additional parameters.
       0,                             // Optional parameter size.
@@ -103,7 +103,7 @@ bool AddDeviceInfo(HANDLE interface_enumerator,
 
   scoped_ptr<char[]> output_buf(new char[1024]);
   status = DeviceIoControl(
-      device_handle,                  // Device handle.
+      device_handle.Get(),            // Device handle.
       IOCTL_STORAGE_QUERY_PROPERTY,   // Flag to request device properties.
       &query,                         // Query parameters.
       sizeof(STORAGE_PROPERTY_QUERY), // query parameters size.
@@ -131,7 +131,7 @@ bool AddDeviceInfo(HANDLE interface_enumerator,
   // Create a drive identifier from the drive number.
   STORAGE_DEVICE_NUMBER device_number = {0};
   status = DeviceIoControl(
-      device_handle,                  // Device handle.
+      device_handle.Get(),            // Device handle.
       IOCTL_STORAGE_GET_DEVICE_NUMBER,// Flag to request device number.
       NULL,                           // Query parameters, should be NULL.
       0,                              // Query parameters size, should be 0.