gpu: Enable OOPR on android/cros by default.

R=ericrk@chromium.org

Bug: 757605
Change-Id: I8ab28e93a6f7457a66e35399d5ab487f3af22178
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/1885095
Commit-Queue: Eric Karl <ericrk@chromium.org>
Reviewed-by: Eric Karl <ericrk@chromium.org>
Auto-Submit: Khushal <khushalsagar@chromium.org>
Cr-Commit-Position: refs/heads/master@{#710398}

gpu/config/gpu_finch_features.cc

@@ -55,8 +55,13 @@ const base::Feature kDefaultEnableGpuRasterization{
 
 // Enable out of process rasterization by default.  This can still be overridden
 // by --enable-oop-rasterization or --disable-oop-rasterization.
+#if defined(OS_ANDROID) || defined(OS_CHROMEOS)
+const base::Feature kDefaultEnableOopRasterization{
+    "DefaultEnableOopRasterization", base::FEATURE_ENABLED_BY_DEFAULT};
+#else
 const base::Feature kDefaultEnableOopRasterization{
     "DefaultEnableOopRasterization", base::FEATURE_DISABLED_BY_DEFAULT};
+#endif
 
 // Allow putting a video swapchain underneath the main swapchain, so overlays
 // can be used even if there are controls on top of the video. It can be