gpu: Replace more chrome ipc with mojom API.

content/browser/gpu/gpu_process_host.h

Index: content/browser/gpu/gpu_process_host.h
diff --git a/content/browser/gpu/gpu_process_host.h b/content/browser/gpu/gpu_process_host.h
index 20322999fbbdd76eab37b494737b6a0178684bf3..167b4d223c0aec0431570e84df5291645d2d85aa 100644
--- a/content/browser/gpu/gpu_process_host.h
+++ b/content/browser/gpu/gpu_process_host.h
@@ -103,9 +103,10 @@ class GpuProcessHost : public BrowserChildProcessHostDelegate,
   // Helper function to run a callback on the IO thread. The callback receives
   // the appropriate GpuProcessHost instance. If |force_create| is false, and no
   // GpuProcessHost instance exists, then the callback is never called.
-  static void CallOnIO(GpuProcessKind kind,
-                       bool force_create,
-                       const base::Callback<void(GpuProcessHost*)>& callback);
+  CONTENT_EXPORT static void CallOnIO(
+      GpuProcessKind kind,
+      bool force_create,
+      const base::Callback<void(GpuProcessHost*)>& callback);
 
   service_manager::InterfaceProvider* GetRemoteInterfaces();