Add chrome side webusb permission UI code

chrome/browser/ui/chrome_bubble_manager.cc

 // Copyright 2015 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 "chrome/browser/ui/chrome_bubble_manager.h"
 
 #include "base/metrics/histogram_macros.h"
 #include "base/metrics/sparse_histogram.h"
 #include "chrome/browser/ui/tabs/tab_strip_model.h"
 #include "components/bubble/bubble_controller.h"
@@ skipping 13 matching lines @@
   BUBBLE_TYPE_MOCK = 1,     // Used for testing.
 
   // Extension-related bubbles:
   BUBBLE_TYPE_EXTENSION_INSTALLED = 10,  // Displayed after installing.
 
   // Translation-related bubbles:
   BUBBLE_TYPE_TRANSLATE = 20,  // Displays a request to translate a page.
 
   // Permissions-related bubbles:
   BUBBLE_TYPE_PERMISSION = 30,  // Displays a permission request to the user.
+  BUBBLE_TYPE_CHOOSER_PERMISSION = 31,  // For chooser permissions.
 
   // Upper boundary for metrics.
   BUBBLE_TYPE_MAX,
 };
 
+// TODO(juncai): Since LogBubbleCloseReason function adds metrics for each
+// close type, we can use only enum, and it may not be necessary to keep the
+// bubble name.
 // Convert from bubble name to ID. The bubble ID will allow collecting the
 // close reason for each bubble type.
 static int GetBubbleId(BubbleReference bubble) {
   BubbleType bubble_type = BUBBLE_TYPE_UNKNOWN;
 
   // Translate from bubble name to enum.
   if (bubble->GetName().compare("MockBubble") == 0)
     bubble_type = BUBBLE_TYPE_MOCK;
   else if (bubble->GetName().compare("ExtensionInstalled") == 0)
     bubble_type = BUBBLE_TYPE_EXTENSION_INSTALLED;
   else if (bubble->GetName().compare("TranslateBubble") == 0)
     bubble_type = BUBBLE_TYPE_TRANSLATE;
   else if (bubble->GetName().compare("PermissionBubble") == 0)
     bubble_type = BUBBLE_TYPE_PERMISSION;
+  else if (bubble->GetName().compare("ChooserBubble") == 0)
+    bubble_type = BUBBLE_TYPE_CHOOSER_PERMISSION;
 
   DCHECK_NE(bubble_type, BUBBLE_TYPE_UNKNOWN);
   DCHECK_NE(bubble_type, BUBBLE_TYPE_MAX);
 
   return bubble_type;
 }
 
 // Log the reason for closing this bubble.
 // Each reason is its own metric. Each histogram call MUST have a runtime
 // constant value passed in for the title.
@@ skipping 88 matching lines @@
 }
 
 void ChromeBubbleManager::ChromeBubbleMetrics::OnBubbleClosed(
     BubbleReference bubble, BubbleCloseReason reason) {
   // Log the amount of time the bubble was visible.
   base::TimeDelta visible_time = bubble->GetVisibleTime();
   UMA_HISTOGRAM_LONG_TIMES("Bubbles.DisplayTime.All", visible_time);
 
   LogBubbleCloseReason(bubble, reason);
 }