Remove unmapped histograms

content/browser/frame_host/render_frame_host_impl.cc

 // Copyright 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/frame_host/render_frame_host_impl.h"
 
 #include <utility>
 
 #include "base/bind.h"
 #include "base/command_line.h"
@@ skipping 753 matching lines @@
 void RenderFrameHostImpl::AccessibilityFatalError() {
   browser_accessibility_manager_.reset(NULL);
   if (accessibility_reset_token_)
     return;
 
   accessibility_reset_count_++;
   if (accessibility_reset_count_ >= kMaxAccessibilityResets) {
     Send(new AccessibilityMsg_FatalError(routing_id_));
   } else {
     accessibility_reset_token_ = g_next_accessibility_reset_token++;
-    UMA_HISTOGRAM_COUNTS("Accessibility.FrameResetCount", 1);
     Send(new AccessibilityMsg_Reset(routing_id_, accessibility_reset_token_));
   }
 }
 
 gfx::AcceleratedWidget
     RenderFrameHostImpl::AccessibilityGetAcceleratedWidget() {
   // Only the main frame's current frame host is connected to the native
   // widget tree for accessibility, so return null if this is queried on
   // any other frame.
   if (frame_tree_node()->parent() ||
@@ skipping 2015 matching lines @@
 
 BrowserAccessibilityManager*
     RenderFrameHostImpl::GetOrCreateBrowserAccessibilityManager() {
   RenderWidgetHostViewBase* view = GetViewForAccessibility();
   if (view &&
       !browser_accessibility_manager_ &&
       !no_create_browser_accessibility_manager_for_testing_) {
     bool is_root_frame = !frame_tree_node()->parent();
     browser_accessibility_manager_.reset(
         view->CreateBrowserAccessibilityManager(this, is_root_frame));
-    if (browser_accessibility_manager_)
-      UMA_HISTOGRAM_COUNTS("Accessibility.FrameEnabledCount", 1);
-    else
-      UMA_HISTOGRAM_COUNTS("Accessibility.FrameDidNotEnableCount", 1);
   }
   return browser_accessibility_manager_.get();
 }
 
 void RenderFrameHostImpl::ActivateFindInPageResultForAccessibility(
     int request_id) {
   AccessibilityMode accessibility_mode = delegate_->GetAccessibilityMode();
   if (accessibility_mode & AccessibilityModeFlagPlatform) {
     BrowserAccessibilityManager* manager =
         GetOrCreateBrowserAccessibilityManager();
@@ skipping 422 matching lines @@
   // There is no pending NavigationEntry in these cases, so pass 0 as the
   // pending_nav_entry_id. If the previous handle was a prematurely aborted
   // navigation loaded via LoadDataWithBaseURL, propagate the entry id.
   return NavigationHandleImpl::Create(
       params.url, frame_tree_node_, is_renderer_initiated,
       params.was_within_same_page, params.is_srcdoc, base::TimeTicks::Now(),
       entry_id_for_data_nav, false);  // started_from_context_menu
 }
 
 }  // namespace content