GradientView starting with 0 alpha of the gradient layer.

> We do not need hotseat protection of the gradient layer now that we
  are using the card UI for all apps. The gradient layer in collapsed
  state caused artifacts.

Bug: 67109038
Change-Id: Ia2b7da9d86729c211e49e2b87d28106077482566
diff --git a/src/com/android/launcher3/graphics/GradientView.java b/src/com/android/launcher3/graphics/GradientView.java
index bacb063..6253e18 100644
--- a/src/com/android/launcher3/graphics/GradientView.java
+++ b/src/com/android/launcher3/graphics/GradientView.java
@@ -75,7 +75,7 @@
         this.mMaskHeight = Utilities.pxFromDp(ALPHA_MASK_HEIGHT_DP, dm);
         this.mMaskWidth = Utilities.pxFromDp(ALPHA_MASK_WIDTH_DP, dm);
         Launcher launcher = Launcher.getLauncher(context);
-        this.mAlphaStart = launcher.getDeviceProfile().isVerticalBarLayout() ? 0 : 100;
+        this.mAlphaStart = 0;
         this.mScrimColor = Themes.getAttrColor(context, R.attr.allAppsScrimColor);
         this.mWallpaperColorInfo = WallpaperColorInfo.getInstance(launcher);
         mAlphaColors = getResources().getInteger(R.integer.extracted_color_gradient_alpha);