[v8] Enable Liftoff on all platforms

It was only enabled on Intel platforms so far (which meant mostly
desktop), after finching we now want to also enable it on mobile
systems for M-85.

R=haraken@chromium.org

Bug: 1040030
Change-Id: I2a2c12b977b2c519f5a7eb61f380d75d11bb943f
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/2252100
Commit-Queue: Kentaro Hara <haraken@chromium.org>
Auto-Submit: Clemens Backes <clemensb@chromium.org>
Reviewed-by: Kentaro Hara <haraken@chromium.org>
Cr-Commit-Position: refs/heads/master@{#780241}

content/public/common/content_features.cc

@@ -689,14 +689,9 @@ const base::Feature kVideoPlaybackQuality{"VideoPlaybackQuality",
 const base::Feature kV8VmFuture{"V8VmFuture",
                                 base::FEATURE_DISABLED_BY_DEFAULT};
 
-// Enable WebAssembly baseline compilation and tier up.
+// Enable WebAssembly baseline compilation (Liftoff).
 const base::Feature kWebAssemblyBaseline{"WebAssemblyBaseline",
-#ifdef ARCH_CPU_X86_FAMILY
-                                         base::FEATURE_ENABLED_BY_DEFAULT
-#else
-                                         base::FEATURE_DISABLED_BY_DEFAULT
-#endif
-};
+                                         base::FEATURE_ENABLED_BY_DEFAULT};
 
 // Enable WebAssembly lazy compilation (JIT on first call).
 const base::Feature kWebAssemblyLazyCompilation{