Improve GPU process URL crash reporting

content/common/gpu/gpu_command_buffer_stub.h

Index: content/common/gpu/gpu_command_buffer_stub.h
diff --git a/content/common/gpu/gpu_command_buffer_stub.h b/content/common/gpu/gpu_command_buffer_stub.h
index caafa70239b33748a28e91fe275aec5065e91469..55c2be9b69dc9a3e3d9281da44fab864eff5422f 100644
--- a/content/common/gpu/gpu_command_buffer_stub.h
+++ b/content/common/gpu/gpu_command_buffer_stub.h
@@ -15,6 +15,7 @@
 #include "content/common/content_export.h"
 #include "content/common/gpu/gpu_memory_allocation.h"
 #include "content/common/gpu/gpu_memory_allocation.h"
+#include "googleurl/src/gurl.h"
 #include "gpu/command_buffer/common/constants.h"
 #include "gpu/command_buffer/service/command_buffer_service.h"
 #include "gpu/command_buffer/service/context_group.h"
@@ -103,7 +104,8 @@ class GpuCommandBufferStub
       int32 route_id,
       int32 surface_id,
       GpuWatchdog* watchdog,
-      bool software);
+      bool software,
+      const GURL& active_url);
 
   virtual ~GpuCommandBufferStub();
 
@@ -222,6 +224,9 @@ class GpuCommandBufferStub
 
   void ReportState();
 
+  // Wrapper for GpuScheduler::PutChanged that sets the crash report URL.
+  void PutChanged();
+
   // Poll the command buffer to execute work.
   void PollWork();
 
@@ -279,6 +284,9 @@ class GpuCommandBufferStub
 
   scoped_refptr<gpu::RefCountedCounter> preempt_by_counter_;
 
+  GURL active_url_;
+  size_t active_url_hash_;
+
   DISALLOW_COPY_AND_ASSIGN(GpuCommandBufferStub);
 };