Move CommandLine to base namespace.

gpu/config/gpu_util.h

Index: gpu/config/gpu_util.h
diff --git a/gpu/config/gpu_util.h b/gpu/config/gpu_util.h
index c10cca6c77384f4fa1df7963e460ccb9ca647e79..e5735a0f77f60a77594d4a942f4005c78f42aa70 100644
--- a/gpu/config/gpu_util.h
+++ b/gpu/config/gpu_util.h
@@ -12,7 +12,9 @@
 #include "build/build_config.h"
 #include "gpu/gpu_export.h"
 
+namespace base {
 class CommandLine;
+}
 
 namespace gpu {
 
@@ -24,12 +26,12 @@ GPU_EXPORT void MergeFeatureSets(
 
 // Collect basic GPUInfo, compute the driver bug workarounds for the current
 // system, and append the |command_line|.
-GPU_EXPORT void ApplyGpuDriverBugWorkarounds(CommandLine* command_line);
+GPU_EXPORT void ApplyGpuDriverBugWorkarounds(base::CommandLine* command_line);
 
 // With provided GPUInfo, compute the driver bug workarounds for the current
 // system, and append the |command_line|.
 GPU_EXPORT void ApplyGpuDriverBugWorkarounds(
-    const GPUInfo& gpu_inco, CommandLine* command_line);
+    const GPUInfo& gpu_inco, base::CommandLine* command_line);
 
 // |str| is in the format of "feature1,feature2,...,featureN".
 GPU_EXPORT void StringToFeatureSet(
@@ -37,7 +39,7 @@ GPU_EXPORT void StringToFeatureSet(
 
 // Get the set of workarounds from switches provided in |command_line|
 GPU_EXPORT std::set<int> WorkaroundsFromCommandLine(
-    CommandLine* command_line);
+    base::CommandLine* command_line);
 
 }  // namespace gpu