[UMA] Add performance profile data to UMA uploads.

base/profiler/alternate_timer.h

Index: base/profiler/alternate_timer.h
diff --git a/base/profiler/alternate_timer.h b/base/profiler/alternate_timer.h
index 883b24f8c02f37db8a5b93b0f3c631a8677a9207..778dc62e658722595492b505dfe6d2fce49ca0ca 100644
--- a/base/profiler/alternate_timer.h
+++ b/base/profiler/alternate_timer.h
@@ -5,32 +5,31 @@
 // This is a glue file, which allows third party code to call into our profiler
 // without having to include most any functions from base.
 
-
 #ifndef BASE_PROFILER_ALTERNATE_TIMER_H_
 #define BASE_PROFILER_ALTERNATE_TIMER_H_
 
+#include "base/base_export.h"
+
 namespace tracked_objects {
 
 // Provide type for an alternate timer function.
 typedef unsigned int NowFunction();
 
+// Environment variable name that is used to activate alternate timer profiling
+// (such as using TCMalloc allocations to provide a pseudo-timer) for tasks
+// instead of wall clock profiling.
+extern const char kAlternateProfilerTime[];
+
 // Set an alternate timer function to replace the OS time function when
 // profiling.  Typically this is called by an allocator that is providing a
 // function that indicates how much memory has been allocated on any given
 // thread.
-extern void SetAlternateTimeSource(NowFunction* now_function);
+void SetAlternateTimeSource(NowFunction* now_function);
 
 // Gets the pointer to a function that was set via SetAlternateTimeSource().
 // Returns NULL if no set was done prior to calling GetAlternateTimeSource.
-extern NowFunction* GetAlternateTimeSource();
-
-// Environment variable name that is used to activate alternate timer profiling
-// (such as using TCMalloc allocations to provide a pseudo-timer) for tasks
-// instead of wall clock profiling.
-extern const char kAlternateProfilerTime[];
-
-
+BASE_EXPORT NowFunction* GetAlternateTimeSource();
 
-}  // tracked_objects
+}  // namespace tracked_objects
 
 #endif  // BASE_PROFILER_ALTERNATE_TIMER_H_