Remove DeviceDisplayInfo from WebContentsViewAndroid

It's unused already.

BUG=625089

Review-Url: https://codereview.chromium.org/2610853009
Cr-Commit-Position: refs/heads/master@{#441771}

content/browser/web_contents/web_contents_view_android.cc

@@ -19,7 +19,6 @@
 #include "content/public/common/drop_data.h"
 #include "ui/android/overscroll_refresh_handler.h"
 #include "ui/display/screen.h"
-#include "ui/gfx/android/device_display_info.h"
 #include "ui/gfx/android/java_bitmap.h"
 #include "ui/gfx/image/image_skia.h"
 
@@ -39,7 +38,6 @@ void DisplayToScreenInfo(const display::Display& display, ScreenInfo* results) {
   results->orientation_angle = display.RotationAsDegree();
   results->orientation_type =
       RenderWidgetHostViewBase::GetOrientationTypeForMobile(display);
-  gfx::DeviceDisplayInfo info;
   results->depth = display.color_depth();
   results->depth_per_component = display.depth_per_component();
   results->is_monochrome = display.is_monochrome();