Create and pass shared-histogram-allocator from browser to renderer.

base/metrics/persistent_histogram_allocator.h

Index: base/metrics/persistent_histogram_allocator.h
diff --git a/base/metrics/persistent_histogram_allocator.h b/base/metrics/persistent_histogram_allocator.h
index cc8d0233d3d337456651fe9ae9cdadca82d22f0f..4319de98929b221c7980f796becb5d45dd87b68f 100644
--- a/base/metrics/persistent_histogram_allocator.h
+++ b/base/metrics/persistent_histogram_allocator.h
@@ -129,8 +129,13 @@ class BASE_EXPORT PersistentHistogramAllocator {
       uint64_t id,
       StringPiece name);
   static void CreateGlobalAllocatorOnSharedMemory(
+      scoped_ptr<SharedMemory> memory,
       size_t size,
-      const SharedMemoryHandle& handle);
+      uint64_t id,
+      StringPiece name);
+  static void CreateGlobalAllocatorOnSharedMemoryHandle(
+      const SharedMemoryHandle& handle,
+      size_t size);
 
   // Import new histograms from the global PersistentHistogramAllocator. It's
   // possible for other processes to create histograms in the active memory