Make UMA_HISTOGRAM_ENUMERATION work with scoped enums.

content/browser/gpu/gpu_data_manager_impl_private.cc

 // Copyright (c) 2013 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #include "content/browser/gpu/gpu_data_manager_impl_private.h"
 
 #include <algorithm>
 #include <iterator>
 #include <memory>
 #include <utility>
@@ skipping 123 matching lines @@
   }
 
   const base::CommandLine& command_line =
       *base::CommandLine::ForCurrentProcess();
   bool disabled = false;
 
   // Use entry 0 to capture the total number of times that data
   // was recorded in this histogram in order to have a convenient
   // denominator to compute blacklist percentages for the rest of the
   // entries.
-  UMA_HISTOGRAM_ENUMERATION("GPU.BlacklistTestResultsPerEntry",
-      0, max_entry_id + 1);
+  UMA_HISTOGRAM_EXACT_LINEAR("GPU.BlacklistTestResultsPerEntry", 0,
+                             max_entry_id + 1);
 
   if (blacklisted_features.size() != 0) {
     std::vector<uint32_t> flag_entries;
     blacklist->GetDecisionEntries(&flag_entries, disabled);
     DCHECK_GT(flag_entries.size(), 0u);
     for (size_t i = 0; i < flag_entries.size(); ++i) {
-      UMA_HISTOGRAM_ENUMERATION("GPU.BlacklistTestResultsPerEntry",
-          flag_entries[i], max_entry_id + 1);
+      UMA_HISTOGRAM_EXACT_LINEAR("GPU.BlacklistTestResultsPerEntry",
+                                 flag_entries[i], max_entry_id + 1);
     }
   }
 
   // This counts how many users are affected by a disabled entry - this allows
   // us to understand the impact of an entry before enable it.
   std::vector<uint32_t> flag_disabled_entries;
   disabled = true;
   blacklist->GetDecisionEntries(&flag_disabled_entries, disabled);
   for (uint32_t disabled_entry : flag_disabled_entries) {
-    UMA_HISTOGRAM_ENUMERATION("GPU.BlacklistTestResultsPerDisabledEntry",
-        disabled_entry, max_entry_id + 1);
+    UMA_HISTOGRAM_EXACT_LINEAR("GPU.BlacklistTestResultsPerDisabledEntry",
+                               disabled_entry, max_entry_id + 1);
   }
 
   const gpu::GpuFeatureType kGpuFeatures[] = {
       gpu::GPU_FEATURE_TYPE_ACCELERATED_2D_CANVAS,
       gpu::GPU_FEATURE_TYPE_GPU_COMPOSITING,
       gpu::GPU_FEATURE_TYPE_GPU_RASTERIZATION,
       gpu::GPU_FEATURE_TYPE_ACCELERATED_WEBGL, gpu::GPU_FEATURE_TYPE_WEBGL2};
   const std::string kGpuBlacklistFeatureHistogramNames[] = {
       "GPU.BlacklistFeatureTestResults.Accelerated2dCanvas",
       "GPU.BlacklistFeatureTestResults.GpuCompositing",
@@ skipping 1187 matching lines @@
   gpu_info_.context_info_state = gpu::kCollectInfoFatalFailure;
 #if defined(OS_WIN)
   gpu_info_.dx_diagnostics_info_state = gpu::kCollectInfoFatalFailure;
 #endif
   complete_gpu_info_already_requested_ = true;
   // Some observers might be waiting.
   NotifyGpuInfoUpdate();
 }
 
 }  // namespace content