a9e0621f33
This includes following changes for performance 1. Passes the key events directly between the windows instead of using dummy Views and OnFocusChangeListener to prevent main thread from handling unnecessary focus changes. 2. Limits the window size for PIP controls to reduce unnecessary draw. Here's the test result. Test is performed with paused PIP video 1. 5 visible recents task Focus down: 48.14 fps -> 85.396 fps (+77.39%) Focus up: 24.67 fps -> 45.33 fps (+83.77%) 2. 3 visible recents task Focus down: 51.98 fps -> 132.72 fps (+155.34%) Focus up: 30.91 fps -> 53.38 fps (+72.69%) Bug: 28042495 Change-Id: I363232176975b160e122748c9997ef4b46b73a28