Establish channel directly from viz::GpuClient

Now that viz::mojom::GpuHost implementation has moved out of content,
viz::GpuClient can directly call on that to establish a gpu channel and
we can remove the functionality from GpuClientDelegate.

BUG=709332

Cq-Include-Trybots: luci.chromium.try:android_optional_gpu_tests_rel
Change-Id: Ied5a8ead810973068190e3ce485609f68f5826d5
Reviewed-on: https://chromium-review.googlesource.com/1188883
Commit-Queue: Mohsen Izadi <mohsen@chromium.org>
Reviewed-by: Jonathan Backer <backer@chromium.org>
Reviewed-by: Sadrul Chowdhury <sadrul@chromium.org>
Cr-Commit-Position: refs/heads/master@{#587852}

components/viz/host/gpu_client.cc

@@ -5,6 +5,7 @@
 #include "components/viz/host/gpu_client.h"
 
 #include "base/numerics/checked_math.h"
+#include "components/viz/host/gpu_host_impl.h"
 #include "components/viz/host/host_gpu_memory_buffer_manager.h"
 #include "gpu/ipc/client/gpu_channel_host.h"
 #include "gpu/ipc/common/gpu_memory_buffer_impl.h"
@@ -79,14 +80,14 @@ void GpuClient::OnEstablishGpuChannel(
     mojo::ScopedMessagePipeHandle channel_handle,
     const gpu::GPUInfo& gpu_info,
     const gpu::GpuFeatureInfo& gpu_feature_info,
-    GpuClientDelegate::EstablishGpuChannelStatus status) {
+    GpuHostImpl::EstablishChannelStatus status) {
   DCHECK_EQ(channel_handle.is_valid(),
-            status == GpuClientDelegate::EstablishGpuChannelStatus::kSuccess);
+            status == GpuHostImpl::EstablishChannelStatus::kSuccess);
   gpu_channel_requested_ = false;
   EstablishGpuChannelCallback callback = std::move(callback_);
   DCHECK(!callback_);
 
-  if (status == GpuClientDelegate::EstablishGpuChannelStatus::kGpuHostInvalid) {
+  if (status == GpuHostImpl::EstablishChannelStatus::kGpuHostInvalid) {
     // GPU process may have crashed or been killed. Try again.
     EstablishGpuChannel(std::move(callback));
     return;
@@ -97,7 +98,7 @@ void GpuClient::OnEstablishGpuChannel(
                             gpu_feature_info);
     return;
   }
-  if (status == GpuClientDelegate::EstablishGpuChannelStatus::kSuccess) {
+  if (status == GpuHostImpl::EstablishChannelStatus::kSuccess) {
     // This is the case we pre-establish a channel before a request arrives.
     // Cache the channel for a future request.
     channel_handle_ = std::move(channel_handle);
@@ -136,26 +137,39 @@ void GpuClient::EstablishGpuChannel(EstablishGpuChannelCallback callback) {
     }
     return;
   }
+
+  GpuHostImpl* gpu_host = delegate_->EnsureGpuHost();
+  if (!gpu_host) {
+    if (callback) {
+      std::move(callback).Run(client_id_, mojo::ScopedMessagePipeHandle(),
+                              gpu::GPUInfo(), gpu::GpuFeatureInfo());
+    }
+    return;
+  }
+
   callback_ = std::move(callback);
   if (gpu_channel_requested_)
     return;
   gpu_channel_requested_ = true;
-  delegate_->EstablishGpuChannel(
-      client_id_, client_tracing_id_,
+  const bool is_gpu_host = false;
+  gpu_host->EstablishGpuChannel(
+      client_id_, client_tracing_id_, is_gpu_host,
       base::BindOnce(&GpuClient::OnEstablishGpuChannel,
                      weak_factory_.GetWeakPtr()));
 }
 
 void GpuClient::CreateJpegDecodeAccelerator(
     media::mojom::JpegDecodeAcceleratorRequest jda_request) {
-  if (auto* gpu_service = delegate_->EnsureGpuService())
-    gpu_service->CreateJpegDecodeAccelerator(std::move(jda_request));
+  if (auto* gpu_host = delegate_->EnsureGpuHost()) {
+    gpu_host->gpu_service()->CreateJpegDecodeAccelerator(
+        std::move(jda_request));
+  }
 }
 
 void GpuClient::CreateVideoEncodeAcceleratorProvider(
     media::mojom::VideoEncodeAcceleratorProviderRequest vea_provider_request) {
-  if (auto* gpu_service = delegate_->EnsureGpuService()) {
-    gpu_service->CreateVideoEncodeAcceleratorProvider(
+  if (auto* gpu_host = delegate_->EnsureGpuHost()) {
+    gpu_host->gpu_service()->CreateVideoEncodeAcceleratorProvider(
         std::move(vea_provider_request));
   }
 }

components/viz/host/gpu_client.h

@@ -8,6 +8,7 @@
 #include "base/callback_forward.h"
 #include "base/memory/weak_ptr.h"
 #include "components/viz/host/gpu_client_delegate.h"
+#include "components/viz/host/gpu_host_impl.h"
 #include "components/viz/host/viz_host_export.h"
 #include "mojo/public/cpp/bindings/binding_set.h"
 #include "services/ws/public/mojom/gpu.mojom.h"
@@ -65,11 +66,10 @@ class VIZ_HOST_EXPORT GpuClient : public ws::mojom::GpuMemoryBufferFactory,
     kConnectionLost
   };
   void OnError(ErrorReason reason);
-  void OnEstablishGpuChannel(
-      mojo::ScopedMessagePipeHandle channel_handle,
-      const gpu::GPUInfo& gpu_info,
-      const gpu::GpuFeatureInfo& gpu_feature_info,
-      GpuClientDelegate::EstablishGpuChannelStatus status);
+  void OnEstablishGpuChannel(mojo::ScopedMessagePipeHandle channel_handle,
+                             const gpu::GPUInfo& gpu_info,
+                             const gpu::GpuFeatureInfo& gpu_feature_info,
+                             GpuHostImpl::EstablishChannelStatus status);
   void OnCreateGpuMemoryBuffer(CreateGpuMemoryBufferCallback callback,
                                gfx::GpuMemoryBufferHandle handle);
   void ClearCallback();

components/viz/host/gpu_client_delegate.h

@@ -8,50 +8,21 @@
 #include "base/callback_forward.h"
 #include "mojo/public/cpp/system/message_pipe.h"
 
-namespace gpu {
-struct GPUInfo;
-struct GpuFeatureInfo;
-}  // namespace gpu
-
 namespace viz {
-namespace mojom {
-class GpuService;
-}
 
+class GpuHostImpl;
 class HostGpuMemoryBufferManager;
 
-// Delegate interface that GpuClientImpl uses to get the current GpuService
-// instance and establish GPU channel for a client. These functions are
-// guaranteed to be called on the thread corresponding to GpuClientImpl's task
-// runner.
+// Delegate interface that GpuClient uses to get the current GpuHost and/or
+// GpuMemoryBufferManager instances. These functions are guaranteed to be called
+// on the thread corresponding to GpuClient's task runner.
 class GpuClientDelegate {
  public:
-  enum class EstablishGpuChannelStatus {
-    kGpuAccessDenied,  // GPU access was not allowed.
-    kGpuHostInvalid,   // Request failed because the gpu host became invalid
-                       // while processing the request (e.g. the gpu process may
-                       // have been killed). The caller should normally make
-                       // another request to establish a new channel.
-    kSuccess,
-  };
-
-  using EstablishGpuChannelCallback =
-      base::OnceCallback<void(mojo::ScopedMessagePipeHandle channel_handle,
-                              const gpu::GPUInfo&,
-                              const gpu::GpuFeatureInfo&,
-                              EstablishGpuChannelStatus status)>;
-
   virtual ~GpuClientDelegate() {}
 
-  // Returns the current instance of GPU service. If GPU service is not running,
+  // Returns the current instance of GpuHostImpl. If GPU service is not running,
   // tries to launch it. If the launch is unsuccessful, returns nullptr.
-  virtual mojom::GpuService* EnsureGpuService() = 0;
-
-  // Sends a request to establish a GPU channel for a client to the GPU service.
-  // If GPU service is not running, tries to launch it and send the request.
-  virtual void EstablishGpuChannel(int client_id,
-                                   uint64_t client_tracing_id,
-                                   EstablishGpuChannelCallback callback) = 0;
+  virtual GpuHostImpl* EnsureGpuHost() = 0;
 
   // Returns the current HostGpuMemoryBufferManager instance.
   virtual HostGpuMemoryBufferManager* GetGpuMemoryBufferManager() = 0;

content/browser/gpu/browser_gpu_client_delegate.cc

@@ -4,76 +4,21 @@
 
 #include "content/browser/gpu/browser_gpu_client_delegate.h"
 
-#include <utility>
-
-#include "components/viz/host/gpu_host_impl.h"
 #include "content/browser/gpu/gpu_memory_buffer_manager_singleton.h"
 #include "content/browser/gpu/gpu_process_host.h"
-#include "gpu/config/gpu_feature_info.h"
-#include "gpu/config/gpu_info.h"
-#include "mojo/public/cpp/system/message_pipe.h"
 
 namespace content {
-namespace {
-
-void OnEstablishGpuChannel(
-    viz::GpuClientDelegate::EstablishGpuChannelCallback callback,
-    mojo::ScopedMessagePipeHandle channel_handle,
-    const gpu::GPUInfo& gpu_info,
-    const gpu::GpuFeatureInfo& gpu_feature_info,
-    viz::GpuHostImpl::EstablishChannelStatus status) {
-  if (!callback)
-    return;
-
-  viz::GpuClientDelegate::EstablishGpuChannelStatus delegate_status;
-  switch (status) {
-    case viz::GpuHostImpl::EstablishChannelStatus::kGpuAccessDenied:
-      delegate_status =
-          viz::GpuClientDelegate::EstablishGpuChannelStatus::kGpuAccessDenied;
-      break;
-    case viz::GpuHostImpl::EstablishChannelStatus::kGpuHostInvalid:
-      delegate_status =
-          viz::GpuClientDelegate::EstablishGpuChannelStatus::kGpuHostInvalid;
-      break;
-    case viz::GpuHostImpl::EstablishChannelStatus::kSuccess:
-      delegate_status =
-          viz::GpuClientDelegate::EstablishGpuChannelStatus::kSuccess;
-      break;
-  }
-  std::move(callback).Run(std::move(channel_handle), gpu_info, gpu_feature_info,
-                          delegate_status);
-}
-
-}  // namespace
 
 BrowserGpuClientDelegate::BrowserGpuClientDelegate() = default;
 
 BrowserGpuClientDelegate::~BrowserGpuClientDelegate() = default;
 
-viz::mojom::GpuService* BrowserGpuClientDelegate::EnsureGpuService() {
+viz::GpuHostImpl* BrowserGpuClientDelegate::EnsureGpuHost() {
   if (auto* host = GpuProcessHost::Get())
-    return host->gpu_service();
+    return host->gpu_host();
   return nullptr;
 }
 
-void BrowserGpuClientDelegate::EstablishGpuChannel(
-    int client_id,
-    uint64_t client_tracing_id,
-    EstablishGpuChannelCallback callback) {
-  auto* host = GpuProcessHost::Get();
-  if (!host) {
-    std::move(callback).Run(mojo::ScopedMessagePipeHandle(), gpu::GPUInfo(),
-                            gpu::GpuFeatureInfo(),
-                            EstablishGpuChannelStatus::kGpuAccessDenied);
-    return;
-  }
-
-  const bool is_gpu_host = false;
-  host->gpu_host()->EstablishGpuChannel(
-      client_id, client_tracing_id, is_gpu_host,
-      base::BindOnce(&OnEstablishGpuChannel, std::move(callback)));
-}
-
 viz::HostGpuMemoryBufferManager*
 BrowserGpuClientDelegate::GetGpuMemoryBufferManager() {
   return GpuMemoryBufferManagerSingleton::GetInstance();

content/browser/gpu/browser_gpu_client_delegate.h

@@ -15,10 +15,7 @@ class BrowserGpuClientDelegate : public viz::GpuClientDelegate {
   ~BrowserGpuClientDelegate() override;
 
   // GpuClientDelegate:
-  viz::mojom::GpuService* EnsureGpuService() override;
-  void EstablishGpuChannel(int client_id,
-                           uint64_t client_tracing_id,
-                           EstablishGpuChannelCallback callback) override;
+  viz::GpuHostImpl* EnsureGpuHost() override;
   viz::HostGpuMemoryBufferManager* GetGpuMemoryBufferManager() override;
 
  private: