Remove dependency on GURL from content/common/gpu

content/gpu/gpu_child_thread.h

Index: content/gpu/gpu_child_thread.h
diff --git a/content/gpu/gpu_child_thread.h b/content/gpu/gpu_child_thread.h
index b83ff794e7bf353014a5049bd6f41212ee8da36b..0aa1186483615ceae24a8bc115c23e787e6ee2f6 100644
--- a/content/gpu/gpu_child_thread.h
+++ b/content/gpu/gpu_child_thread.h
@@ -19,6 +19,7 @@
 #include "content/child/child_thread_impl.h"
 #include "content/common/gpu/gpu_channel.h"
 #include "content/common/gpu/gpu_channel_manager.h"
+#include "content/common/gpu/gpu_channel_manager_delegate.h"
 #include "content/common/gpu/gpu_config.h"
 #include "content/common/gpu/x_util.h"
 #include "content/common/process_control.mojom.h"
@@ -44,7 +45,8 @@ class GpuWatchdogThread;
 // these per process. It does process initialization and shutdown. It forwards
 // IPC messages to GpuChannelManager, which is responsible for issuing rendering
 // commands to the GPU.
-class GpuChildThread : public ChildThreadImpl {
+class GpuChildThread : public ChildThreadImpl,
+                       public GpuChannelManagerDelegate {
  public:
   typedef std::queue<IPC::Message*> DeferredMessages;
 
@@ -71,6 +73,9 @@ class GpuChildThread : public ChildThreadImpl {
   bool OnControlMessageReceived(const IPC::Message& msg) override;
   bool OnMessageReceived(const IPC::Message& msg) override;
 
+  // GpuChannelManagerDelegate implementation.
+  void SetActiveURL(const std::string& url) override;
+
  private:
   // Message handlers.
   void OnInitialize();