Move IndexedDB from WEBKIT_DEPRECATED to dedicated thread

content/public/browser/indexed_db_context.h

Index: content/public/browser/indexed_db_context.h
diff --git a/content/public/browser/indexed_db_context.h b/content/public/browser/indexed_db_context.h
index 0f7127d03ee17ba54ae7e4c65fd3c2d1d843c4f2..1d11a9a6cb1915940b7f36817447ac0ef474e5e0 100644
--- a/content/public/browser/indexed_db_context.h
+++ b/content/public/browser/indexed_db_context.h
@@ -13,12 +13,20 @@
 #include "content/common/content_export.h"
 #include "content/public/browser/indexed_db_info.h"
 
+namespace base {
+class SequencedTaskRunner;
+class TaskRunner;
+}
+
 namespace content {
 
 // Represents the per-BrowserContext IndexedDB data.
-// Call these methods only on the WebKit thread.
+// Call these methods only via the exposed TaskRunner.
 class IndexedDBContext : public base::RefCountedThreadSafe<IndexedDBContext> {
  public:
+  // Only call the below methods by posting to this TaskRunner.
+  virtual base::TaskRunner* TaskRunner() const = 0;
+
   // Methods used in response to QuotaManager requests.
   virtual std::vector<GURL> GetAllOrigins() = 0;
   virtual std::vector<IndexedDBInfo> GetAllOriginsInfo() = 0;
@@ -31,6 +39,9 @@ class IndexedDBContext : public base::RefCountedThreadSafe<IndexedDBContext> {
   // Get the file name of the local storage file for the given origin.
   virtual base::FilePath GetFilePathForTesting(
       const std::string& origin_id) const = 0;
+  // Set the task runner for tests if browser main loop is not initialized.
+  virtual void SetTaskRunnerForTesting(
+      base::SequencedTaskRunner* task_runner) = 0;
 
  protected:
   friend class base::RefCountedThreadSafe<IndexedDBContext>;