Remove skia::PlatformBitmap.

content/browser/media/capture/web_contents_video_capture_device_unittest.cc

Index: content/browser/media/capture/web_contents_video_capture_device_unittest.cc
diff --git a/content/browser/media/capture/web_contents_video_capture_device_unittest.cc b/content/browser/media/capture/web_contents_video_capture_device_unittest.cc
index 4f3fb0a325b84da1505857a55f6b7f87319ad9b5..705df7071e2ddb4e2f97b2ca523b20568024ad81 100644
--- a/content/browser/media/capture/web_contents_video_capture_device_unittest.cc
+++ b/content/browser/media/capture/web_contents_video_capture_device_unittest.cc
@@ -273,15 +273,13 @@ class CaptureTestRenderViewHost : public TestRenderViewHost {
     gfx::Size size = controller_->GetCopyResultSize();
     SkColor color = controller_->GetSolidColor();
 
-    // Although it's not necessary, use a PlatformBitmap here (instead of a
-    // regular SkBitmap) to exercise possible threading issues.
-    skia::PlatformBitmap output;
-    EXPECT_TRUE(output.Allocate(size.width(), size.height(), false));
+    SkBitmap output;
+    EXPECT_TRUE(output.tryAllocN32Pixels(size.width(), size.height()));
     {
-      SkAutoLockPixels locker(output.GetBitmap());
-      output.GetBitmap().eraseColor(color);
+      SkAutoLockPixels locker(output);
+      output.eraseColor(color);
     }
-    callback.Run(output.GetBitmap(), content::READBACK_SUCCESS);
+    callback.Run(output, content::READBACK_SUCCESS);
     controller_->SignalCopy();
   }