Completed the code path from AndroidProviderService to HistoryBackend.

chrome/browser/android_provider_service.cc

+// Copyright (c) 2012 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/android_provider_service.h"
+
+#include "chrome/browser/history/history.h"
+#include "chrome/browser/profiles/profile.h"
+
+AndroidProviderService::AndroidProviderService(Profile* profile)
+    : profile_(profile) {
+}
+
+AndroidProviderService::~AndroidProviderService() {
+}
+
+void AndroidProviderService::QueryHistoryAndBookmarks(
+    const std::vector<history::HistoryAndBookmarkRow::ColumnID>& projections,
+    const std::string selection,
+    const std::vector<string16>& selection_args,
+    const std::string sort_order,
+    CancelableRequestConsumerBase* consumer,
+    const QueryCallback& callback) {
+  QueryRequest* request = new QueryRequest(callback);
+  AddRequest(request, consumer);
+  HistoryService* hs = profile_->GetHistoryService(Profile::EXPLICIT_ACCESS);
+  if (hs) {
+    hs->QueryHistoryAndBookmarks(request, projections, selection,
+                                 selection_args, sort_order);
+  } else {
+    ForwardEmptyQueryResultAsync(request);
+  }
+}
+
+void AndroidProviderService::UpdateHistoryAndBookmarks(
+    const history::HistoryAndBookmarkRow& row,
+    const std::string& selection,
+    const std::vector<string16>& selection_args,
+    CancelableRequestConsumerBase* consumer,
+    const UpdateCallback& callback) {
+  UpdateRequest* request = new UpdateRequest(callback);
+  AddRequest(request, consumer);
+  HistoryService* hs = profile_->GetHistoryService(Profile::EXPLICIT_ACCESS);
+  if (hs)
+    hs->UpdateHistoryAndBookmarks(request, row, selection, selection_args);
+  else
+    ForwardEmptyUpdateResultAsync(request);
+}
+
+void AndroidProviderService::DeleteHistoryAndBookmarks(
+    const std::string& selection,
+    const std::vector<string16>& selection_args,
+    CancelableRequestConsumerBase* consumer,
+    const DeleteCallback& callback) {
+  DeleteRequest* request = new DeleteRequest(callback);
+  AddRequest(request, consumer);
+  HistoryService* hs = profile_->GetHistoryService(Profile::EXPLICIT_ACCESS);
+  if (hs)
+    hs->DeleteHistoryAndBookmarks(request, selection, selection_args);
+  else
+    ForwardEmptyDeleteResultAsync(request);
+}
+
+void AndroidProviderService::InsertHistoryAndBookmark(
+    const history::HistoryAndBookmarkRow& values,
+    CancelableRequestConsumerBase* consumer,
+    const InsertCallback& callback) {
+  InsertRequest* request = new InsertRequest(callback);
+  AddRequest(request, consumer);
+  HistoryService* hs = profile_->GetHistoryService(Profile::EXPLICIT_ACCESS);
+  if (hs)
+    hs->InsertHistoryAndBookmark(request, values);
+  else
+    ForwardEmptyInsertResultAsync(request);
+}
+
+void AndroidProviderService::DeleteHistory(
+    const std::string& selection,
+    const std::vector<string16>& selection_args,
+    CancelableRequestConsumerBase* consumer,
+    const DeleteCallback& callback) {
+  DeleteRequest* request = new DeleteRequest(callback);
+  AddRequest(request, consumer);
+  HistoryService* hs = profile_->GetHistoryService(Profile::EXPLICIT_ACCESS);
+  if (hs)
+    hs->DeleteHistory(request, selection, selection_args);
+  else
+    ForwardEmptyDeleteResultAsync(request);
+}
+
+void AndroidProviderService::MoveStatement(
+    history::AndroidStatement* statement,
+    int current_pos,
+    int destination,
+    CancelableRequestConsumerBase* consumer,
+    const MoveStatementCallback& callback) {
+  MoveStatementRequest* request = new MoveStatementRequest(callback);
+  AddRequest(request, consumer);
+  HistoryService* hs = profile_->GetHistoryService(Profile::EXPLICIT_ACCESS);
+  if (hs)
+    hs->MoveStatement(request, statement, current_pos, destination);
+  else
+    ForwardEmptyMoveStatementResultAsync(request, current_pos);
+}
+
+void AndroidProviderService::CloseStatement(
+    history::AndroidStatement* statement) {
+  HistoryService* hs = profile_->GetHistoryService(Profile::EXPLICIT_ACCESS);
+  if (hs)
+    hs->CloseStatement(statement);
+}
+
+void AndroidProviderService::InsertSearchTerm(
+    const history::SearchRow& row,
+    CancelableRequestConsumerBase* consumer,
+    const InsertCallback& callback) {
+  InsertRequest* request = new InsertRequest(callback);
+  AddRequest(request, consumer);
+  HistoryService* hs = profile_->GetHistoryService(Profile::EXPLICIT_ACCESS);
+  if (hs)
+    hs->InsertSearchTerm(request, row);
+  else
+    ForwardEmptyInsertResultAsync(request);
+}
+
+void AndroidProviderService::UpdateSearchTerms(
+    const history::SearchRow& row,
+    const std::string& selection,
+    const std::vector<string16>& selection_args,
+    CancelableRequestConsumerBase* consumer,
+    const UpdateCallback& callback) {
+  UpdateRequest* request = new UpdateRequest(callback);
+  AddRequest(request, consumer);
+  HistoryService* hs = profile_->GetHistoryService(Profile::EXPLICIT_ACCESS);
+  if (hs)
+    hs->UpdateSearchTerms(request, row, selection, selection_args);
+  else
+    ForwardEmptyUpdateResultAsync(request);
+}
+
+void AndroidProviderService::DeleteSearchTerms(
+    const std::string& selection,
+    const std::vector<string16>& selection_args,
+    CancelableRequestConsumerBase* consumer,
+    const DeleteCallback& callback) {
+  DeleteRequest* request = new DeleteRequest(callback);
+  AddRequest(request, consumer);
+  HistoryService* hs = profile_->GetHistoryService(Profile::EXPLICIT_ACCESS);
+  if (hs)
+    hs->DeleteSearchTerms(request, selection, selection_args);
+  else
+    ForwardEmptyDeleteResultAsync(request);
+}
+
+void AndroidProviderService::QuerySearchTerms(
+    const std::vector<history::SearchRow::ColumnID>& projections,
+    const std::string selection,
+    const std::vector<string16>& selection_args,
+    const std::string sort_order,
+    CancelableRequestConsumerBase* consumer,
+    const QueryCallback& callback) {
+  QueryRequest* request = new QueryRequest(callback);
+  AddRequest(request, consumer);
+  HistoryService* hs = profile_->GetHistoryService(Profile::EXPLICIT_ACCESS);
+  if (hs) {
+    hs->QuerySearchTerms(request, projections, selection, selection_args,
+                         sort_order);
+  } else {
+    ForwardEmptyQueryResultAsync(request);
+  }
+}
+
+void AndroidProviderService::ForwardEmptyInsertResultAsync(
+    InsertRequest* request) {
+  request->ForwardResultAsync(request->handle(), false, 0);

[sky, 2012/04/25 15:57:25]

These methods are buying you anything. Inline the calls.

[michaelbai, 2012/04/26 05:32:48]

Done.

+}
+
+void AndroidProviderService::ForwardEmptyQueryResultAsync(
+    QueryRequest* request) {
+  request->ForwardResultAsync(request->handle(), false, 0);
+}
+
+void AndroidProviderService::ForwardEmptyUpdateResultAsync(
+    UpdateRequest* request) {
+  request->ForwardResultAsync(request->handle(), false, 0);
+}
+
+void AndroidProviderService::ForwardEmptyDeleteResultAsync(
+    DeleteRequest* request) {
+  request->ForwardResultAsync(request->handle(), false, 0);
+}
+
+void AndroidProviderService::ForwardEmptyMoveStatementResultAsync(
+    MoveStatementRequest* request,
+    int value) {
+  request->ForwardResultAsync(request->handle(), value);
+}