alloy: Don't create GPUCache directory when cache_path is empty (fixes #3617)

patch/patch.cfg

@@ -721,5 +721,10 @@ patches = [
     # chrome: mac: Support locale configuration.
     # https://github.com/chromiumembedded/cef/issues/3623
     'name': 'mac_chrome_locale_3623'
+  },
+  {
+    # alloy: Don't create GPUCache directory when cache_path is empty.
+    # https://github.com/chromiumembedded/cef/issues/3617
+    'name': 'content_renderer_host_3617'
   }
 ]

patch/patches/content_renderer_host_3617.patch

@@ -0,0 +1,14 @@
+diff --git content/browser/renderer_host/render_process_host_impl.cc content/browser/renderer_host/render_process_host_impl.cc
+index 67b608870e591..f8f47a606ea51 100644
+--- content/browser/renderer_host/render_process_host_impl.cc
++++ content/browser/renderer_host/render_process_host_impl.cc
+@@ -1614,7 +1614,8 @@ bool RenderProcessHostImpl::Init() {
+   // initialized because in tests the factory may never have been initialized.
+   if (!GetBrowserContext()->IsOffTheRecord() &&
+       !base::CommandLine::ForCurrentProcess()->HasSwitch(
+-          switches::kDisableGpuShaderDiskCache)) {
++          switches::kDisableGpuShaderDiskCache) &&
++      !storage_partition_impl_->GetPath().empty()) {
+     if (auto* cache_factory = GetGpuDiskCacheFactorySingleton()) {
+       for (const gpu::GpuDiskCacheType type : gpu::kGpuDiskCacheTypes) {
+         auto handle = cache_factory->GetCacheHandle(