remove unneeded reference to SkBitmapDevice.h

Try failures are unrelated to this CL.
NOTRY=True

Review URL: https://codereview.chromium.org/575693002

Cr-Commit-Position: refs/heads/master@{#295792}

cc/output/renderer_pixeltest.cc

@@ -13,7 +13,6 @@
 #include "cc/test/pixel_test.h"
 #include "gpu/command_buffer/client/gles2_interface.h"
 #include "media/base/video_frame.h"
-#include "third_party/skia/include/core/SkBitmapDevice.h"
 #include "third_party/skia/include/core/SkColorPriv.h"
 #include "third_party/skia/include/core/SkImageFilter.h"
 #include "third_party/skia/include/core/SkMatrix.h"

cc/output/software_renderer.cc

@@ -21,7 +21,6 @@
 #include "cc/quads/texture_draw_quad.h"
 #include "cc/quads/tile_draw_quad.h"
 #include "skia/ext/opacity_draw_filter.h"
-#include "third_party/skia/include/core/SkBitmapDevice.h"
 #include "third_party/skia/include/core/SkCanvas.h"
 #include "third_party/skia/include/core/SkColor.h"
 #include "third_party/skia/include/core/SkImageFilter.h"

content/renderer/gpu/compositor_software_output_device.cc

@@ -9,7 +9,6 @@
 #include "content/child/child_shared_bitmap_manager.h"
 #include "content/renderer/render_process.h"
 #include "content/renderer/render_thread_impl.h"
-#include "third_party/skia/include/core/SkBitmapDevice.h"
 #include "third_party/skia/include/core/SkCanvas.h"
 #include "third_party/skia/include/core/SkPixelRef.h"
 #include "third_party/skia/include/core/SkRegion.h"